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## Go Math Grade 6 Chapter 4 Model Ratios Answer Key

Are you searching for the easy way of maths learning? Then, you must follow Go Math Grade 6 Chapter 4 Model Ratios Answer Key. All questions are explained with step by step explanation and also with diagrams. So, students can learn visual learning in an easy manner. If you want to learn maths seriously, then Go Math Grade 6 Answer Key is the only solution for you.

**Lesson 1: Investigate • Model Ratios**

- Model Ratios – Page No. 213
- Model Ratios – Page No. 214
- Model Ratios – Page No. 215
- Model Ratios Lesson Check – Page No. 216

**Lesson 2: Ratios and Rates**

- Ratios and Rates – Page No. 219
- Ratios and Rates – Page No. 220
- Ratios and Rates – Page No. 221
- Ratios and Rates Lesson Check – Page No. 222

**Lesson 3: Equivalent Ratios and Multiplication Tables**

- Equivalent Ratios and Multiplication Tables – Page No. 225
- Equivalent Ratios and Multiplication Tables – Page No. 226
- Equivalent Ratios and Multiplication Tables – Page No. 227
- Equivalent Ratios and Multiplication Tables Lesson Check – Page No. 228

**Lesson 4: Problem Solving • Use Tables to Compare Ratios**

- Use Tables to Compare Ratios – Page No. 231
- Use Tables to Compare Ratios – Page No. 232
- Use Tables to Compare Ratios – Page No. 233
- Use Tables to Compare Ratios Lesson Check – Page No. 234

**Lesson 5: Algebra • Use Equivalent Ratios**

- Use Equivalent Ratios – Page No. 237
- Use Equivalent Ratios – Page No. 238
- Use Equivalent Ratios – Page No. 239
- Use Equivalent Ratios Lesson Check – Page No. 240

**Mid-Chapter Checkpoint**

**Lesson 6: Find Unit Rates**

- Find Unit Rates – Page No. 245
- Find Unit Rates – Page No. 246
- Find Unit Rates – Page No. 247
- Find Unit Rates Lesson Check – Page No. 248

**Lesson 7: Algebra • Use Unit Rates**

- Use Unit Rates – Page No. 251
- Use Unit Rates – Page No. 252
- Use Unit Rates – Page No. 253
- Use Unit Rates Lesson Check – Page No. 254

**Lesson 8: Algebra • Equivalent Ratios and Graphs**

- Equivalent Ratios and Graphs – Page No. 257
- Equivalent Ratios and Graphs – Page No. 258
- Equivalent Ratios and Graphs – Page No. 259
- Equivalent Ratios and Graphs Lesson Check – Page No. 260

**Chapter 4 Review/Test**

- Review/Test – Page No. 261
- Review/Test – Page No. 262
- Review/Test – Page No. 263
- Review/Test – Page No. 264
- Review/Test – Page No. 265
- Review/Test – Page No. 266

### Share and Show – Page No. 213

**Write the ratio of yellow counters to red counters.**

Question 1.

Type below:

___________

Answer:

1: 2

Explanation:

There are one yellow counter and two red counters.

So, the ratio is 1:2

Question 2.

Type below:

___________

Answer:

5: 3

Explanation:

There are 5 yellow counter and 3 red counters.

So, the ratio is 5:3

**Draw a model of the ratio.**

Question 3.

3 : 2

Type below:

___________

Answer:

Explanation:

As the ratio is 3:2, we can draw three yellow counters and 2 red counters.

Question 4.

1 : 5

Type below:

___________

Answer:

Explanation:

As the ratio is 1:5, we can draw 1 yellow counter and 5 red counters.

**Use the ratio to complete the table.**

Question 5.

Wen is arranging flowers in vases. For every 1 rose she uses, she uses 6 tulips. Complete the table to show the ratio of roses to tulips.

Type below:

___________

Answer:

Explanation:

There is 1 box for every 6 Tulips.

The ratio is 1 : 6.

Each time the number of boxes increases by 1, the number of Tulips increases by 6

So, for 2 boxes, 6 + 6 = 12 Tulips

For 3 boxes, 12 + 6 = 18 Tulips

For 4 boxes, 18 + 6 = 24 Tulips

Question 6.

On the sixth-grade field trip, there are 8 students for every 1 adult. Complete the table to show the ratio of students to adults.

Type below:

___________

Answer:

Explanation:

There is 1 adult out of 8 Students.

The ratio is 8:1.

Each time the number of students increases double, the number of adults becomes double.

So, for 8 + 8 = 16 students, 2 Adults available

For 16 + 8 = 24 students, 2 + 1 = 3 Adults available

For 24 + 8 = 32 students, 3 + 1 = 4 Adults available

Question 7.

Zena adds 4 cups of flour for every 3 cups of sugar in her recipe. Draw a model that compares cups of flour to cups of sugar.

Type below:

___________

Answer:

Explanation:

Zena adds 4 cups of flour for every 3 cups of sugar in her recipe.

For every 3 cups of sugar, she adds 4 cups of flour.

For 6 cups of sugar, she adds 8 cups of flour

For 9 cups of sugar, she adds 12 cups of flour

For 12 cups of sugar, she adds 16 cups of flour

### Draw Conclusions – Page No. 214

**The reading skill draw conclusions can help you analyze and make sense of information.**

Hikers take trail mix as a snack on long hikes because it is tasty, nutritious, and easy to carry. There are many different recipes for trail mix, but it is usually made from different combinations of dried fruit, raisins, seeds, and nuts. Tanner and his dad make trail mix that has 1 cup of raisins for every 3 cups of sunflower seeds.

Question 8.

Model Mathematics Explain how you could model the ratio that compares cups of raisins to cups of sunflower seeds when Tanner uses 2 cups of raisins.

Type below:

___________

Answer:

Explanation:

Hikers take trail mix as a snack on long hikes because it is tasty, nutritious, and easy to carry. There are many different recipes for trail mix, but it is usually made from different combinations of dried fruit, raisins, seeds, and nuts. Tanner and his dad make trail mix that has 1 cup of raisins for every 3 cups of sunflower seeds.

For 2 cups of raisins, he needs 3 + 3 = 6 cups of sunflower seeds

**The table shows the ratio of cups of raisins to cups of sunflower seeds for different amounts of trail mix. Model each ratio as you complete the table.**

Question 9.

Describe the pattern you see in the table.

Type below:

___________

Answer:

Multiply Raisins by 3 to get number of Sunflower Seeds.

Question 10.

Draw Conclusions What conclusion can Tanner draw from this pattern?

Type below:

___________

Answer:

He needs 3 times as many seeds as raisins

Question 11.

What is the ratio of cups of sunflower seeds to cups of trail mix when Tanner uses 4 cups of raisins?

Type below:

___________

Answer:

4:12

Explanation:

If tanner uses 4 cups of raisins, he needs 12 cups of sunflower seeds.

### Model Ratios – Page No. 215

**Write the ratio of gray counters to white counters.**

Question 1.

Type below:

___________

Answer:

3:4

Explanation:

There are 3 gray counter and 4 white counters.

So, the ratio is 3:4

Question 2.

Type below:

___________

Answer:

4:1

Explanation:

There are 4 gray counter and 1 white counter.

So, the ratio is 4:1

Question 3.

Type below:

___________

Answer:

2:3

Explanation:

There are 2 gray counter and 3 white counters.

So, the ratio is 2:3

**Draw a model of the ratio.**

Question 4.

5 : 1

Type below:

___________

Answer:

Explanation:

As the ratio is 5:1, we can draw 5 yellow counters and 1 red counter.

Question 5.

6 : 3

Type below:

___________

Answer:

Explanation:

As the ratio is 6:3, we can draw 6 yellow counters and 3 red counters.

**Use the ratio to complete the table.**

Question 6.

Marc is assembling gift bags. For every 2 pencils he places in the bag, he uses 3 stickers. Complete the table to show the ratio of pencils to stickers.

Type below:

___________

Answer:

Explanation:

Marc is assembling gift bags. For every 2 pencils he places in the bag, he uses 3 stickers.

For 4 pencils, he uses 3 + 3 = 6 stickers

For 6 pencils, he uses 6 + 3 = 9 stickers

For 8 pencils, he uses 9 + 3 = 12 stickers

Question 7.

Singh is making a bracelet. She uses 5 blue beads for every 1 silver bead. Complete the table to show the ratio of blue beads to silver beads

Type below:

___________

Answer:

Explanation:

Singh is making a bracelet. She uses 5 blue beads for every 1 silver bead.

For 2 silver bead, she uses 5 + 5 = 10 blue beads.

For 3 silver bead, she uses 10 + 5 = 15 blue beads.

For 4 silver bead, she uses 15 + 5 = 20 blue beads.

**Problem Solving**

Question 8.

There are 4 quarts in 1 gallon. How many quarts are in 3 gallons?

______ quarts

Answer:

12 quarts

Explanation:

There are 4 quarts in 1 gallon. If there are 3 gallons, he uses 3 × 4 = 12 quarts

Question 9.

Martin mixes 1 cup lemonade with 4 cups cranberry juice to make his favorite drink. How much cranberry juice does he need if he uses 5 cups of lemonade?

______ cups

Answer:

20 cups

Explanation:

Martin mixes 1 cup lemonade with 4 cups cranberry juice to make his favorite drink. If he uses 5 cups of lemonade, 5 × 4 = 20 cups

Question 10.

Suppose there was 1 centerpiece for every 5 tables. Use counters to show the ratio of centerpieces to tables. Then make a table to find the number of tables if there are 3 centerpieces.

Type below:

___________

Answer:

Explanation:

Suppose there was 1 centerpiece for every 5 tables.

If there are 3 centerpieces, 5 × 3 = 15 tables

### Lesson Check – Page No. 216

Question 1.

Francine is making a necklace that has 1 blue bead for every 6 white beads. How many white beads will she use if she uses 11 blue beads?

______ white beads

Answer:

66 white beads

Explanation:

Francine is making a necklace that has 1 blue bead for every 6 white beads.

11 × 6 = 66 white beads

Question 2.

A basketball league assigns 8 players to each team. How many players can sign up for the league if there are 24 teams?

______ players

Answer:

192 players

Explanation:

A basketball league assigns 8 players to each team.

If there are 24 teams, 24 × 8 = 192 players to each team

**Spiral Review**

Question 3.

Louis has 45 pencils and 75 pens to divide into gift bags at the fair. He does not want to mix the pens and pencils. He wants to place an equal amount in each bag. What is the greatest number of pens or pencils he can place in each bag?

______

Answer:

Louis can form at most 15 bags, each of them will contain 3 pencils and 5 pens.

Explanation:

Louis has 45 pencils and 75 pens to divide into gift bags at the fair. He does not want to mix the pens and pencils. He wants to place an equal amount in each bag.

Factor both these numbers:

45 = 3·3·5;

75 = 3·5·5.

The greatest common factor (write all common factors and multiply them) is 3·5=15. Then:

45=15·3;

75=15·5.

Louis can form at most 15 bags, each of them will contain 3 pencils and 5 pens.

Question 4.

Of the 24 students in Greg’s class, \(\frac{3}{8}\) ride the bus to school. How many students ride the bus?

______ students

Answer:

9 students

Explanation:

Of the 24 students in Greg’s class, \(\frac{3}{8}\) ride the bus to school.

3/8 x 24= 9

Question 5.

Elisa made 0.44 of the free throws she attempted. What is that amount written as a fraction in simplest form?

\(\frac{□}{□}\)

Answer:

\(\frac{11}{25}\)

Explanation:

Elisa made 0.44 of the free throws she attempted.

0.44 = 44/100

44/100 = 22/50 = 11/25

11/25

Question 6.

On a coordinate plane, the vertices of a rectangle are (–1, 1), (3, 1), (–1, –4), and (3, –4). What is the perimeter of the rectangle?

______ units

Answer:

18 units

Explanation:

On a coordinate plane, the vertices of a rectangle are (–1, 1), (3, 1), (–1, –4), and (3, –4).

|-1| = 1

The distance from (–1, 1), (3, 1) is 1 + 0 + 0 + 3 = 4

|-4| = 4

The distance from (3, 1), (3, –4) is 1 + 0 + 0 + 4 = 5

perimeter of the rectangle = 4 + 5 + 5 + 4 = 18

### Share and Show – Page No. 219

Question 1.

Write the ratio of the number of red bars to blue stars.

\(\frac{□}{□}\)

Answer:

\(\frac{8}{3}\)

Explanation:

There are 8 stars and 3 red boxes.

So, the ratio is 8:3

**Write the ratio in two different ways.**

Question 2.

8 to 16

Type below:

___________

Answer:

\(\frac{8}{16}\)

8:16

Explanation:

8 to 16 as a fraction 8/16

8 to 16 with a colon 8:16

Question 3.

\(\frac{4}{24}\)

Type below:

___________

Answer:

4 to 24

4:24

Explanation:

\(\frac{4}{24}\) using words 4 to 24

\(\frac{4}{24}\) with a colon 4:24

Question 4.

1 : 3

Type below:

___________

Answer:

1 to 3

\(\frac{1}{3}\)

Explanation:

1 : 3 using words 1 to 3

1 : 3 as a fraction 1/3

Question 5.

7 to 9

Type below:

___________

Answer:

\(\frac{7}{9}\)

7:9

Explanation:

7 to 9 as a fraction 7/9

7 to 9 with a colon 7:9

Question 6.

Marilyn saves $15 per week. Complete the table to find the rate that gives the amount saved in 4 weeks. Write the rate in three different ways.

Type below:

___________

Answer:

Explanation:

Marilyn saves $15 per week.

for 4 weeks, $15 × 4 = $60

**On Your Own**

**Write the ratio in two different ways.**

Question 7.

\(\frac{16}{40}\)

Type below:

___________

Answer:

16 to 40

16:40

Explanation:

\(\frac{16}{40}\) using words 16 to 40

\(\frac{16}{40}\) with a colon 16:40

Question 8.

8 : 12

Type below:

___________

Answer:

8 to 12

\(\frac{8}{12}\)

Explanation:

8 : 12 using words 8 to 12

8 : 12 as a fraction \(\frac{8}{12}\)

Question 9.

4 to 11

Type below:

___________

Answer:

\(\frac{4}{11}\)

4:11

Explanation:

4 to 11 as a fraction \(\frac{4}{11}\)

4 to 11 with a colon 4:11

Question 10.

2 : 13

Type below:

___________

Answer:

2 to 13

\(\frac{2}{13}\)

Explanation:

2 : 13 using words 2 to 13

2 : 13 as a fraction \(\frac{2}{13}\)

Question 11.

There are 24 baseball cards in 4 packs. Complete the table to find the rate that gives the number of cards in 2 packs. Write this rate in three different ways.

Type below:

___________

Answer:

Explanation:

There are 24 baseball cards in 4 packs.

For 2 packs, (2 × 24)/4 = 12

For 1 pack, (1× 24)/4 = 6

Question 12.

Make Connections Explain how the statement “There is \(\frac{3}{4}\) cup per serving” represents a rate.

Type below:

___________

Answer:

There is a 3/4 cup of whatever in one serving. If that serving amount changed to 2, then the 3/4 would be multiplied by 2. If there is half a serving, then it would be divided by 2. There is a constant change and not one that is always changing.

### Problem Solving + Applications – Page No. 220

**Use the diagram of a birdhouse for 13–15.**

Question 13.

Write the ratio of AB to BC in three different ways.

Type below:

___________

Answer:

28 : 12, 28 to 12, \(\frac{2}{13}\)

Explanation:

AB = 28 in

BC = 12 in

AB : BC = 28 : 12, 28 to 12, \(\frac{2}{13}\)

Question 14.

Write the ratio of the shortest side length of triangle ABC to the perimeter of the triangle in three different ways.

Type below:

___________

Answer:

12 : 64, 12 to 64, \(\frac{12}{64}\)

Explanation:

the shortest side length of triangle ABC = 12 in

the perimeter of the triangle 12 + 28 + 24 = 64

12 : 64, 12 to 64, \(\frac{12}{64}\)

Question 15.

Represent a Problem Write the ratio of the perimeter of triangle ABC to the longest side length of the triangle in three different ways.

Type below:

___________

Answer:

64 : 28, 64 to 28, \(\frac{64}{28}\)

Explanation:

the ratio of the perimeter of triangle ABC = 12 + 28 + 24 = 64

the longest side length of the triangle = 28 in

64 : 28, 64 to 28, \(\frac{64}{28}\)

Question 16.

Leandra places 6 photos on each page in a photo album. Find the rate that gives the number of photos on 2 pages. Write the rate in three different ways.

Type below:

___________

Answer:

6 : 12, 6 to 12, \(\frac{6}{12}\)

Explanation:

Leandra places 6 photos on each page in a photo album.

For 2 pages, 6 × 2 = 12 in

6 : 12, 6 to 12, \(\frac{6}{12}\)

Question 17.

What’s the Question? The ratio of total students in Ms. Murray’s class to students in the class who have an older brother is 3 to 1. The answer is 1:2. What is the question?

Type below:

___________

Answer:

What is the ratio of students in the class who don’t have an older brother to students in the class with an older brother.

Question 18.

What do all unit rates have in common?

Type below:

___________

Answer:

A rate is a ratio that is used to compare different kinds of quantities. A unit rate describes how many units of the first type of quantity corresponds to one unit of the second type of quantity.

Question 19.

Julia has 2 green reusable shopping bags and 5 purple reusable shopping bags. Select the ratios that compare the number of purple reusable shopping bags to the total number of reusable shopping bags. Mark all that apply.

- 5 to 7
- 5 : 7
- 5 : 2
- \(\frac{2}{5}\)
- 2 to 7
- \(\frac{5}{7}\)

Type below:

___________

Answer:

5 to 7, 5 : 7, \(\frac{5}{7}\)

Explanation:

the number of purple reusable shopping bags = 5

the total number of reusable shopping bags = 5 + 2 = 7

5 to 7, 5 : 7, \(\frac{5}{7}\)

### Ratios and Rates – Page No. 221

**Write the ratio in two different ways.**

Question 1.

\(\frac{4}{5}\)

Type below:

___________

Answer:

4 to 5

4 : 5

Explanation:

\(\frac{4}{5}\) using words 4 to 5

\(\frac{4}{5}\) with a colon 4 : 5

Question 2.

16 to 3

Type below:

___________

Answer:

\(\frac{16}{3}\)

16 : 3

Explanation:

16 to 3 as a fraction \(\frac{16}{3}\)

16 to 3 with a colon 16 : 3

Question 3.

9 : 13

Type below:

___________

Answer:

9 to 13

\(\frac{9}{13}\)

Explanation:

9 : 13 using words 9 to 13

9 : 13 as a fraction \(\frac{9}{13}\)

Question 4.

\(\frac{15}{8}\)

Type below:

___________

Answer:

15 to 8

15 : 8

Explanation:

\(\frac{15}{8}\) using words 15 to 8

\(\frac{15}{8}\) with a colon 15 : 8

Question 5.

There are 20 light bulbs in 5 packages. Complete the table to find the rate that gives the number of light bulbs in 3 packages. Write this rate in three different ways.

Type below:

___________

Answer:

Explanation:

There are 20 light bulbs in 5 packages.

For 1 package, 4 light bulbs available

For 2 package, 8 light bulbs available

For 3 package, 12 light bulbs available

For 4 package, 16 light bulbs available

**Problem Solving**

Question 6.

Gemma spends 4 hours each week playing soccer and 3 hours each week practicing her clarinet. Write the ratio of hours spent practicing clarinet to hours spent playing soccer three different ways.

Type below:

___________

Answer:

\(\frac{3}{4}\), 3 : 4, 3 to 4

Explanation:

Gemma spends 4 hours each week playing soccer and 3 hours each week practicing her clarinet.

3/4, 3 : 4, 3 to 4

Question 7.

Randall bought 2 game controllers at Electronics Plus for $36. What is the unit rate for a game controller at Electronics Plus?

Type below:

___________

Answer:

\(\frac{$18}{1}\)

Explanation:

Randall bought 2 game controllers at Electronics Plus for $36. $36/2 = $18/1 is the unit rate for a game controller at Electronics Plus

Question 8.

Explain how to determine if a given rate is also a unit rate.

Type below:

___________

Answer:

when rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. If you have a multiple-unit rate such as 120 student for every 3 buses, an want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term

### Lesson Check – Page No. 222

Question 1.

At the grocery store, Luis bought 10 bananas and 4 apples. What are three different ways to write the ratio of apples to bananas?

Type below:

___________

Answer:

4 : 10, 4 to 10, \(\frac{4}{10}\)

Explanation:

At the grocery store, Luis bought 10 bananas and 4 apples. 4/10, 4 : 10, 4 to 10

Question 2.

Rita checked out 7 books from the library. She had 2 non-fiction books. The rest were fiction. What are three different ways to write the ratio of non-fiction to fiction?

Type below:

___________

Answer:

2 to 5, 2 : 5, \(\frac{2}{5}\)

Explanation:

Rita checked out 7 books from the library. She had 2 non-fiction books. The rest were fiction.

fiction = 5

2 to 5, 2 : 5, \(\frac{2}{5}\)

**Spiral Review**

Question 3.

McKenzie bought 1.2 pounds of coffee for $11.82. What was the cost per pound?

$ ______

Answer:

$9.85

Explanation:

McKenzie bought 1.2 pounds of coffee for $11.82. $11.82/1.2 = $9.85

Question 4.

Pedro has a bag of flour that weighs \(\frac{9}{10}\) pound. He uses \(\frac{2}{3}\) of the bag to make gravy. How many pounds of flour does Pedro use to make gravy?

\(\frac{□}{□}\) pound

Answer:

\(\frac{3}{5}\) pound

Explanation:

Pedro has a bag of flour that weighs \(\frac{9}{10}\) pound. He uses \(\frac{2}{3}\) of the bag to make gravy.

\(\frac{9}{10}\) × \(\frac{2}{3}\) = 3/5

Question 5.

Gina draws a map of her town on a coordinate plane. The point that represents the town’s civic center is 1 unit to the right of the origin and 4 units above it. What are the coordinates of the point representing the civic center?

Type below:

___________

Answer:

(-1, 4)

Explanation:

Gina draws a map of her town on a coordinate plane. The point that represents the town’s civic center is 1 unit to the right of the origin and 4 units above it.

(-1, 4)

Question 6.

Stefan draws these shapes. What is the ratio of triangles to stars?

Type below:

___________

Answer:

2 to 5

Explanation:

There are 2 triangles and 5 stars. So, the ratio is 2 : 5

### Share and Show – Page No. 225

**Write two equivalent ratios.**

Question 1.

Use a multiplication table to write two ratios that are equivalent to \(\frac{4}{7}\).

Type below:

___________

Answer:

\(\frac{4}{7}\) = \(\frac{8}{14}\), \(\frac{12}{21}\)

Explanation:

The original ratio is 4/7. Shade the row for 4 and the row for 7 on the multiplication table.

The column for 2 shows there are 2 ∙ 4, when there are 2 ∙ 7. So, 4/7 equal to 8/14

The column for 3 shows there are 3 ∙ 4, when there are 3 ∙ 7. So, 4/7 equal to 12/21

Question 2.

Type below:

___________

Answer:

Explanation:

The original ratio is 3/7. Shade the row for 3 and the row for 7 on the multiplication table.

The column for 2 shows there are 2 ∙ 3, when there are 2 ∙ 7. So, 3/7 equal to 6/14

The column for 3 shows there are 3 ∙ 3, when there are 3 ∙ 7. So, 3/7 equal to 9/21

Question 3.

Type below:

___________

Answer:

Explanation:

The original ratio is 5/2. Shade the row for 5 and the row for 2 on the multiplication table.

The column for 2 shows there are 2 ∙ 5 when there are 2 ∙ 2. So, 5/2 equal to 10/4

The column for 3 shows there are 3 ∙ 5 when there are 3 ∙ 2. So, 5/2 equal to 15/6

Question 4.

Type below:

___________

Answer:

Explanation:

The original ratio is 2/10. Shade the row for 2 and the row for 10 on the multiplication table.

The column for 1 shows there are 1 ∙ 2 when there are 5 ∙ 2. So, 2/10 equal to 1/5

The column for 3 shows there are 1 ∙ 3 when there are 5 ∙ 3. So, 2/10 equal to 3/15

Question 5.

\(\frac{4}{5}\)

Type below:

___________

Answer:

\(\frac{4}{5}\) = \(\frac{8}{10}\), \(\frac{12}{15}\)

Explanation:

The original ratio is 4/5. Shade the row for 4 and the row for 5 on the multiplication table.

The column for 2 shows there are 2 ∙ 4, when there are 2 ∙ 5. So, 4/5 equal to 8/10

The column for 3 shows there are 3 ∙ 4, when there are 3 ∙ 5. So, 4/5 equal to 12/15

Question 6.

\(\frac{12}{30}\)

Type below:

___________

Answer:

\(\frac{12}{30}\) = \(\frac{24}{60}\), \(\frac{36}{90}\)

Explanation:

The original ratio is 12/30. Shade the row for 12 and the row for 30 on the multiplication table.

The column for 2 shows there are 2 ∙ 12 when there are 2 ∙ 30. So, 12/30 equal to 24/60

The column for 3 shows there are 3 ∙ 12 when there are 3 ∙ 30. So, 12/30 equal to 36/90

Question 7.

\(\frac{2}{9}\)

Type below:

___________

Answer:

\(\frac{2}{9}\) = \(\frac{4}{18}\), \(\frac{6}{27}\)

Explanation:

The original ratio is 2/9. Shade the row for 2 and the row for 9 on the multiplication table.

The column for 2 shows there are 2 ∙ 2, when there are 2 ∙ 9. So, 2/9 equal to 4/18

The column for 3 shows there are 3 ∙ 2, when there are 3 ∙ 9. So, 2/9 equal to 6/27

**On Your Own**

**Write two equivalent ratios.**

Question 8.

Type below:

___________

Answer:

Explanation:

The original ratio is 9/8. Shade the row for 9 and the row for 8 on the multiplication table.

The column for 2 shows there are 2 ∙ 9 when there are 2 ∙ 8. So, 9/8 equal to 18/16

The column for 3 shows there are 3 ∙ 9 when there are 3 ∙ 8. So, 9/8 equal to 27/24

Question 9.

Type below:

___________

Answer:

Explanation:

The original ratio is 5/4. Shade the row for 5 and the row for 4 on the multiplication table.

The column for 2 shows there are 2 ∙ 5 when there are 2 ∙ 4. So, 5/4 equal to 10/8

The column for 3 shows there are 3 ∙ 5 when there are 3 ∙ 4. So, 5/4 equal to 15/20

Question 10.

Type below:

___________

Answer:

Explanation:

The original ratio is 6/9. Shade the row for 6 and the row for 9 on the multiplication table.

The column for 1 shows there are 1 ∙ 3 when there are 1. 4.5. So, 5/4 equal to 3/4.5

The column for 3 shows there are 3 ∙ 3 when there are 3 ∙ 4.5. So, 5/4 equal to 9/13.5

Question 11.

\(\frac{8}{7}\)

Type below:

___________

Answer:

\(\frac{8}{7}\) = \(\frac{16}{14}\), \(\frac{24}{21}\)

Explanation:

The original ratio is 8/7. Shade the row for 8 and the row for 7 on the multiplication table.

The column for 2 shows there are 2 ∙ 8, when there are 2 ∙ 7. So, 8/7 equal to 16/14

The column for 3 shows there are 3 ∙ 8, when there are 3 ∙ 7. So, 8/7 equal to 24/21

Question 12.

\(\frac{2}{6}\)

Type below:

___________

Answer:

\(\frac{2}{6}\) = \(\frac{4}{12}\), \(\frac{6}{18}\)

Explanation:

The original ratio is 2/6. Shade the row for 2 and the row for 6 on the multiplication table.

The column for 2 shows there are 2 ∙ 2, when there are 2 ∙ 6. So, 2/6 equal to 4/12

The column for 3 shows there are 3 ∙ 2, when there are 3 ∙ 6. So, 2/6 equal to 6/18

Question 13.

\(\frac{4}{11}\)

Type below:

___________

Answer:

\(\frac{4}{11}\) = \(\frac{8}{22}\), \(\frac{12}{33}\)

Explanation:

The original ratio is 4/11. Shade the row for 4 and the row for 11 on the multiplication table.

The column for 2 shows there are 2 ∙ 4, when there are 2 ∙ 11. So, 4/11 equal to 8/22

The column for 3 shows there are 3 ∙ 4, when there are 3 ∙ 11. So, 4/11 equal to 12/33

**Determine whether the ratios are equivalent.**

Question 14.

\(\frac{2}{3} \text { and } \frac{8}{12}\)

___________

Answer:

Yes

Explanation:

2/3 × 4/4 = 8/12

So, 2/3 is equal to 8/12

Question 15.

\(\frac{8}{10} \text { and } \frac{6}{10}\)

___________

Answer:

No

Explanation:

8/10 ÷ 2/2 = 4/5

8/10 is not equal to 6/10

Question 16.

\(\frac{16}{60} \text { and } \frac{4}{15}\)

___________

Answer:

yes

Explanation:

16/60 ÷ 4/4 = 4/15

16/60 is equal to 4/15

Question 17.

\(\frac{3}{14} \text { and } \frac{8}{28}\)

___________

Answer:

No

Explanation:

3/14 is not equal to 8/28

### Problem Solving + Applications – Page No. 226

**Use the multiplication table for 18 and 19.**

Question 18.

In Keith’s baseball games this year, the ratio of times he has gotten on base to the times he has been at bat is \(\frac{4}{14}\). Write two ratios that are equivalent to \(\frac{4}{14}\).

Type below:

___________

Answer:

\(\frac{4}{14}\) = \(\frac{8}{28}\), \(\frac{2}{7}\)

Explanation:

4/14

multiply both numbers by 2

8/28

divide both numbers by 2

2/7

Question 19.

Pose a Problem Use the multiplication table to write a new problem involving equivalent ratios. Then solve the problem.

Type below:

___________

Answer:

The ratio of times he has gotten on base to the times he has been at bat is \(\frac{6}{9}\). Write two ratios that are equivalent to \(\frac{6}{9}\)

.multiply both numbers by 2 = 12/18

multiply both numbers by 3 = 18/ 27

Question 20.

Describe how to write an equivalent ratio for \(\frac{9}{27}\) without using a multiplication table.

Type below:

___________

Answer:

\(\frac{9}{27}\) = \(\frac{18}{54}\), \(\frac{3}{9}\)

Explanation:

\(\frac{9}{27}\)

multiply both numbers by 2, 18/54

divide both numbers by 3

3/9

Question 21.

Write a ratio that is equivalent to \(\frac{6}{9} \text { and } \frac{16}{24}\).

\(\frac{□}{□}\)

Answer:

\(\frac{2}{3}\)

Explanation:

\(\frac{6}{9} \text { and } \frac{16}{24}\)

\(\frac{2}{3}\) is the equivalent ratio to \(\frac{6}{9} \text { and } \frac{16}{24}\)

Question 22.

Determine whether each ratio is equivalent to \(\frac{1}{3}, \frac{5}{10}, \text { or } \frac{3}{5}\). Write the ratio in the correct box.

Type below:

___________

Answer:

3/9, 7/21, 18/30, 10/30

Explanation:

2/4 = 1/2

3/9 = 1/3

7/21 = 1/3

18/30 = 3/5

10/30 = 1/3

6/10 = 2/5

8/16 = 4/8 = 1/2

### Equivalent Ratios and Multiplication Tables – Page No. 227

**Write two equivalent ratios.**

Question 1.

Use a multiplication table to write two ratios that are equivalent to \(\frac{5}{3}\).

Type below:

___________

Answer:

\(\frac{5}{3}\) = \(\frac{10}{6}\), \(\frac{15}{9}\)

Explanation:

The original ratio is 5/3. Shade the row for 5 and the row for 3 on the multiplication table.

The column for 2 shows there are 2 ∙ 5, when there are 2 ∙ 3. So, 5/3 equal to 10/6

The column for 3 shows there are 3 ∙ 5, when there are 3 ∙ 3. So, 5/3 equal to 15/9

Question 2.

Type below:

___________

Answer:

Explanation:

The original ratio is 6/7. Shade the row for 6 and the row for 7 on the multiplication table.

The column for 2 shows there are 2 ∙ 6 when there are 2 ∙ 7. So, 6/7 equal to 12/14

The column for 3 shows there are 3 ∙ 6 when there are 3 ∙ 7. So, 6/7 equal to 18/21

Question 2.

Type below:

___________

Answer:

Explanation:

The original ratio is 3/2. Shade the row for 3 and the row for 2 on the multiplication table.

The column for 2 shows there are 2 ∙ 3 when there are 2 ∙ 2. So, 3/2 equal to 6/4

Multiply 3/2 with 4/4 = 12/8

Question 4.

\(\frac{6}{8}\)

Type below:

___________

Answer:

\(\frac{6}{8}\) =\(\frac{12}{16}\), \(\frac{18}{24}\)

Explanation:

The original ratio is 6/8. Shade the row for 6 and the row for 8 on the multiplication table.

The column for 2 shows there are 2 ∙ 6, when there are 2 ∙ 8. So, 6/8 equal to 12/16

The column for 3 shows there are 3 ∙ 6, when there are 3 ∙ 8. So, 6/8 equal to 18/24

Question 5.

\(\frac{11}{1}\)

Type below:

___________

Answer:

\(\frac{11}{1}\) = \(\frac{22}{2}\), \(\frac{33}{3}\)

Explanation:

The original ratio is 11/1. Shade the row for 11 and the row for 1 on the multiplication table.

The column for 2 shows there are 2 ∙ 11, when there are 2 ∙ 1. So, 11/1 equal to 22/2

The column for 3 shows there are 3 ∙ 11, when there are 3 ∙ 1. So, 11/1 equal to 33/3

**Determine whether the ratios are equivalent.**

Question 6.

\(\frac{2}{3} \text { and } \frac{5}{6}\).

___________

Answer:

No

Explanation:

2/3 is not equal to 5/6

Question 7.

\(\frac{5}{10} \text { and } \frac{1}{6}\).

___________

Answer:

No

Explanation:

5/10 is not equal to 1/6

Question 8.

\(\frac{8}{3} \text { and } \frac{32}{12}\).

___________

Answer:

Yes

Explanation:

8/3 × 4/4 = 32/12

8/3 is equal to 32/12

Question 9.

\(\frac{9}{12} \text { and } \frac{3}{4}\).

___________

Answer:

Yes

Explanation:

9/12 ÷ 3/3 = 3/4

9/12 is equal to 3/4

**Problem Solving**

Question 10.

Tristan uses 7 stars and 9 diamonds to make a design. Write two ratios that are equivalent to \(\frac{7}{9}\).

Type below:

___________

Answer:

\(\frac{7}{9}\) = \(\frac{14}{18}\) , \(\frac{21}{27}\)

Explanation:

Tristan uses 7 stars and 9 diamonds to make a design.

\(\frac{7}{9}\)

The original ratio is 7/9. Shade the row for 7 and the row for 9 on the multiplication table.

The column for 2 shows there are 2 ∙ 7, when there are 2 ∙ 9. So, 7/9 equal to 14/18

The column for 3 shows there are 3 ∙ 7, when there are 3 ∙ 9. So, 7/9 equal to 21/27

Question 11.

There are 12 girls and 16 boys in Javier’s math class. There are 26 girls and 14 boys in Javier’s choir class. Are the ratios of girls to boys in the two classes equivalent? Explain.

Type below:

___________

Answer:

No, the ratio 26/14 is not equal to the ratio 12/16

Question 12.

Explain how to determine whether two ratios are equivalent.

Type below:

___________

Answer:

If any ratio is multiplied or divided by the same number, then the ratios are equivalent.

### Lesson Check – Page No. 228

Question 1.

A pancake recipe calls for 4 cups of flour and 3 cups milk. Does a recipe calling for 2 cups flour and 1.5 cups milk use the same ratio of flour to milk?

___________

Answer:

A muffin recipe that calls for 2 cups flour and 1.5 cups milk

Explanation:

A pancake recipe calls for 4 cups of flour and 3 cups milk. A muffin recipe that calls for 2 cups flour and 1.5 cups milk.

Question 2.

A bracelet is made of 14 red beads and 19 gold beads. A necklace is made of 84 red beads and 133 gold beads. Do the two pieces of jewelry have the same ratio of red beads to gold beads?

___________

Answer:

The bracelet has 14 red and 19 gold, so the ratio between red and gold is 14/19. We cannot simplify this ratio as there are not common factors between 14 and 19, because 19 is a prime number.

As there are 84 red and 133 gold the ratio will be 84/133. For this ratio to be equal to 14/19 it should be that 84 is multiple of 14 and 133 multiple of 19, and both multiples must the same,

84/133 is not equal to 14/19

**Spiral Review**

Question 3.

Scissors come in packages of 3. Glue sticks come in packages of 10. Martha wants to buy the same number of each. What is the fewest glue sticks Martha can buy?

_____ glue sticks

Answer:

30 glue sticks

Explanation:

Scissors come in packages of 3. Glue sticks come in packages of 10. Martha wants to buy the same number of each.

3 × 10 = 30 glue sticks

Question 4.

Cole had \(\frac{3}{4}\) hour of free time before dinner. He spent \(\frac{2}{3}\) of the time playing the guitar. How long did he play the guitar?

\(\frac{□}{□}\) hour

Answer:

\(\frac{1}{2}\) hour

Explanation:

Cole had \(\frac{3}{4}\) hour of free time before dinner. He spent \(\frac{2}{3}\) of the time playing the guitar.

\(\frac{2}{3}\) × \(\frac{3}{4}\) = 1/2 hour

Question 5.

Delia has 3 \(\frac{5}{8}\) yards of ribbon. About how many \(\frac{1}{4}\)-yard-long pieces can she cut?

About _____ pieces

Answer:

About 14 pieces

Explanation:

Length of yards of ribbon is 3 5/8 = 29/8

Length of yards of ribbon pieces need to be cut is 1/4

Number of yards = 29/8 ÷ 1/4 = 14.5 = 14

Question 6.

Which point is located at –1.1?

Type below:

___________

Answer:

B

Explanation:

-1.1 is in between -1 and -2

-1.1 is close to -1

So, the answer is point B

### Share and Show – Page No. 231

Question 1.

In Jawan’s school, 4 out of 10 students chose basketball as a sport they like to watch, and 3 out of 5 students chose football. Is the ratio of students who chose basketball (4 to 10) equivalent to the ratio of students who chose football (3 to 5)?

Type below:

___________

Answer:

the ratio of students who chose basketball (4 to 10) is not equivalent to the ratio of students who chose football (3 to 5)

Explanation:

In Jawan’s school, 4 out of 10 students chose basketball as a sport they like to watch, and 3 out of 5 students chose football.

4/10 = 0.4

3/5 = 0.6

0.4 is not equal to 0.6

The ratio of students who chose basketball (4 to 10) is not equivalent to the ratio of students who chose football (3 to 5)

Question 2.

What if 20 out of 50 students chose baseball as a sport they like to watch? Is this ratio equivalent to the ratio for either basketball or football? Explain.

Type below:

___________

Answer:

The baseball ratio is equal to the basketball ratio

Explanation:

If 20 out of 50 students chose baseball, 20/50 = 2/5

2/5 × 2/2 = 4/10

The baseball ratio is equal to the basketball ratio.

Question 3.

Look for Structure The table shows the results of the quizzes Hannah took in one week. Did Hannah get the same score on her math and science quizzes? Explain.

Type below:

___________

Answer:

Hannah didn’t get the same score on her math and science quizzes

Explanation:

Social Studies = 4/5

Math = 8/10 = 0.8

Science = 3/4 = 0.75

English = 10/12

Math = 8/10

Divide the 8/10 with 2/2 = 8/10 ÷ 2/2 = 4/5

Hannah didn’t get the same score on her math and science quizzes

Question 4.

Did Hannah get the same score on the quizzes in any of her classes? Explain.

Type below:

___________

Answer:

The ratio of Social Studies is equal to the ratio of Math

Explanation:

Social Studies = 4/5 = 0.8

Math = 8/10 = 0.8

Science = 3/4 = 0.75

English = 10/12 = 0.8333

The ratio of Social Studies is equal to the ratio of Math

### On Your Own – Page No. 232

Question 5.

For every $10 that Julie makes, she saves $3. For every $15 Liam makes, he saves $6. Is Julie’s ratio of money saved to money earned equivalent to Liam’s ratio of money saved to money earned?

Type below:

___________

Answer:

Julie’s ratio of money saved to money earned is not equivalent to Liam’s ratio of money saved to money earned.

Explanation:

No. Julie’s ratio is 3:10 or 30 percent towards her savings while Lion’s is 6:15 which is 40 percent towards savings.

Question 6.

A florist offers three different bouquets of tulips and irises. The list shows the ratios of tulips to irises in each bouquet. Determine the bouquets that have equivalent ratios.

Type below:

___________

Answer:

The ratio of Spring Mix is equal to the ratio of Splash of Sun

Explanation:

Spring Mix = 4/6 = 0.66

Morning Melody = 9/12 = 0.75

Splash of Sun = 10/15 =0.66

The ratio of Spring Mix is equal to the ratio of Splash of Sun

Question 7.

The ratio of boys to girls in a school’s soccer club is 3 to 5. The ratio of boys to girls in the school’s chess club is 13 to 15. Is the ratio of boys to girls in the soccer club equivalent to the ratio of boys to girls in the chess club? Explain

Type below:

___________

Answer:

No

Explanation:

They are not equivalent because you can not reduce 13 any further because it is a prime number and if you multiply 3 by 3 and 5 by 3 you would get 9:15 as the equivalent ratio.

Question 8.

Analyze Thad, Joey, and Mia ran in a race. The finishing times were 4.56 minutes, 3.33 minutes, and 4.75 minutes. Thad did not finish last. Mia had the fastest time. What was each runner’s time?

Type below:

___________

Answer:

Mia = 3.33 minutes

Joey = 4.75 minutes

Thad = 4.56 minutes

Explanation:

Mia had the fastest time. 3.33 minutes

Thad did not finish last. So, Joey = 4.75 minutes

Thad = 4.56 minutes

Question 9.

Fernando donates $2 to a local charity organization for every $15 he earns. Cleo donates $4 for every $17 she earns. Is Fernando’s ratio of money donated to money earned equivalent to Cleo’s ratio of money donated to money earned? Explain.

Type below:

___________

Answer:

Fernando’s ratio of money donated to money earned is not equivalent to Cleo’s ratio of money donated to money earned

Explanation:

Fernando donates $2 to a local charity organization for every $15 he earns.

$2/$15 = 0.1333

Cleo donates $4 for every $17 she earns. $4/$17 = 0.2359

Fernando’s ratio of money donated to money earned is not equivalent to Cleo’s ratio of money donated to money earned

### Problem Solving Use Tables to Compare Ratios – Page No. 233

**Read each problem and solve.**

Question 1.

Sarah asked some friends about their favorite colors. She found that 4 out of 6 people prefer blue, and 8 out of 12 people prefer green. Is the ratio of friends who chose blue to the total asked equivalent to the ratio of friends who chose green to the total asked?

Type below:

___________

Answer:

Yes, 4/6 is equivalent to 8/12

Explanation:

4/6 = 0.666

8/12 = 0.666

Question 2.

Lisa and Tim make necklaces. Lisa uses 5 red beads for every 3 yellow beads. Tim uses 9 red beads for every 6 yellow beads. Is the ratio of red beads to yellow beads in Lisa’s necklace equivalent to the ratio in Tim’s necklace?

Type below:

___________

Answer:

The ratio of red beads to yellow beads in Lisa’s necklace is not equivalent to the ratio in Tim’s necklace

Explanation:

Lisa and Tim make necklaces. Lisa uses 5 red beads for every 3 yellow beads.

5/3 = 1.666

Tim uses 9 red beads for every 6 yellow beads. 9/6 = 1.5

The ratio of red beads to yellow beads in Lisa’s necklace is not equivalent to the ratio in Tim’s necklace

Question 3.

Mitch scored 4 out of 5 on a quiz. Demetri scored 8 out of 10 on a quiz. Did Mitch and Demetri get equivalent scores?

Type below:

___________

Answer:

Mitch and Demetri get equivalent scores

Explanation:

Mitch scored 4 out of 5 on a quiz. 4/5 = 0.8

Demetri scored 8 out of 10 on a quiz. = 8/10 = 0.8

Mitch and Demetri get equivalent scores

Question 4.

Use tables to show which of these ratios are equivalent : \(\frac{4}{6}\), \(\frac{10}{25}, \text { and } \frac{6}{15}\).

Type below:

___________

Answer:

\(\frac{10}{25}, \text { and } \frac{6}{15}\) are equal

Explanation:

\(\frac{4}{6}\) = 0.6666

\(\frac{10}{25}\) = 0.4

\(\frac{6}{15}\) = 0.4

\(\frac{10}{25}, \text { and } \frac{6}{15}\) are equal

### Page No. 234

Question 1.

Mrs. Sahd distributes pencils and paper to students in the ratio of 2 pencils to 10 sheets of paper. Three of these ratios are equivalent to \(\frac{2}{10}\). Which one is NOT equivalent?

\(\frac{1}{5} \frac{7}{15} \frac{4}{20} \frac{8}{40}\)

Type below:

___________

Answer:

\(\frac{7}{15}\) is not equal \(\frac{2}{10}\)

Explanation:

Mrs. Sahd distributes pencils and paper to students in the ratio of 2 pencils to 10 sheets of paper. Three of these ratios are equivalent to \(\frac{2}{10}\) = 0.2

\(\frac{1}{5}\) = 0.2

\(\frac{7}{15}\) = 0.4666

\(\frac{4}{20}\) = 0.2

\(\frac{8}{40}\) = 0.2

\(\frac{7}{15}\) is not equal \(\frac{2}{10}\)

Question 2.

Keith uses 18 cherries and 3 peaches to make a pie filling. Lena uses an equivalent ratio of cherries to peaches when she makes pie filling. Can Lena use a ratio of 21 cherries to 6 peaches? Explain.

Type below:

___________

Answer:

No, she cannot use a ratio of 21 cherries to 6 peaches

Explanation:

Keith uses 18 cherries and 3 peaches to make a pie filling. 18/3 = 6

Lena uses a ratio of 21 cherries to 6 peaches, 21/6 = 3.5

No, she cannot use a ratio of 21 cherries to 6 peaches

**Spiral Review**

Question 3.

What is the quotient \(\frac{3}{20} \div \frac{7}{10}\)?

Type below:

___________

Answer:

\(\frac{3}{14}\)

Explanation:

\(\frac{3}{20} \div \frac{7}{10}\)

3/20 × 10/7 = 3/14

Question 4.

Which of these numbers is greater than – 2.25 but less than –1?

1 -1.5 0 -2.5

Type below:

___________

Answer:

Explanation:

1 lies between 0 to 1

-1.5 lies between -1 and -2. It is greater than -2.25 and also less than -1

0 lies between -1 to 1

-2.5 lies between -2 and -3. -2.5 is less than -2.25

Question 5.

Alicia plots a point at (0, 5) and (0, –2). What is the distance between the points?

Type below:

___________

Answer:

7 units

Explanation:

Alicia plots a point at (0, 5) and (0, –2).

The given points have the same x-coordinates.

|-2| = 2

5 + 0 = 5

0 + 2 = 2

5 + 2 = 7

The distance is 7 units

Question 6.

Morton sees these stickers at a craft store. What is the ratio of clouds to suns?

Type below:

___________

Answer:

3 : 2

Explanation:

there are 3 clouds and 2 suns. So, the ratio is 3 to 2.

### Share and Show – Page No. 237

**Use equivalent ratios to find the unknown value.**

Question 1.

\(\frac{?}{10}=\frac{4}{5}\)

_____

Answer:

\(\frac{8}{10}\) = \(\frac{4}{5}\)

Explanation:

Use common denominators to write equivalent ratios.

10 is a multiple of 5, so 10 is a common denominator.

Multiply the 4 and denominator by 2 to write the ratios using a common denominator.

4/5 × 2/2 = 8/10

The denominators are the same, so the numerators are equal to each other.

So, the unknown value is 8/10 = 4/5

\(\frac{8}{10}\)

Question 2.

\(\frac{18}{24}=\frac{6}{?}\)

_____

Answer:

\(\frac{6}{8}\) = \(\frac{18}{24}\)

Explanation:

Write an equivalent ratio with 18 in the numerator.

Divide 18 by 6 to get 3

So, divide the denominator by 24 as well.

24/3 = 8

The numerators are the same, so the denominators are equal to each other.

So, the unknown value is 6/8 = 18/24

\(\frac{6}{8}\)

Question 3.

\(\frac{3}{6}=\frac{15}{?}\)

_____

Answer:

\(\frac{15}{30}\)

Explanation:

Write an equivalent ratio with 15 in the numerator.

Multiply 3 with 5 to get 15

So, Multiply 6 with 5 to get the denominator of unknown number.

6 × 5 = 30

The numerators are the same, so the denominators are equal to each other.

So, the unknown value is 3/6 = 15/30

\(\frac{15}{30}\)

Question 4.

\(\frac{?}{5}=\frac{8}{10}\)

_____

Answer:

\(\frac{4}{5}\)

Explanation:

Write an equivalent ratio with 10 in the denominator.

Divide 10 by 2 to get 5

So, divide the numerator 8 as well.

8/2 = 4

The denominators are the same, so the numerators are equal to each other.

So, the unknown value is 8/10 = 4/5

\(\frac{4}{5}\)

Question 5.

\(\frac{7}{4}=\frac{?}{12}\)

_____

Answer:

\(\frac{21}{12}\)

Explanation:

Write an equivalent ratio with 12 in the denominator.

Multiply 4 with 3 to get 12

So, Multiply 7 with 3 to get the numerator of unknown number.

7 × 3 = 21

The denominators are the same, so the numerators are equal to each other.

So, the unknown value is 21/12 = 7/4

\(\frac{21}{12}\)

Question 6.

\(\frac{10}{?}=\frac{40}{12}\)

_____

Answer:

\(\frac{10}{3}\)

Explanation:

Write an equivalent ratio with 40 in the numerator.

Divide 40 by 4 to get 10

So, divide the denominator 12 as well.

12/4 = 3

The numerators are the same, so the denominators are equal to each other.

So, the unknown value is 10/3 = 40/12

\(\frac{10}{3}\)

**On Your Own**

**Use equivalent ratios to find the unknown value.**

Question 7.

\(\frac{2}{6}=\frac{?}{30}\)

_____

Answer:

\(\frac{10}{30}\)

Explanation:

Use common denominators to write equivalent ratios.

30 is a multiple of 6, so 30 is a common denominator.

Multiply the 6 and denominator by 5 to write the ratios using a common denominator.

2/6 × 5/5 =10/30

The denominators are the same, so the numerators are equal to each other.

So, the unknown value is 10/30 = 2/6

\(\frac{10}{30}\)

Question 8.

\(\frac{5}{?}=\frac{55}{110}\)

_____

Answer:

\(\frac{5}{10}\)

Explanation:

Write an equivalent ratio with 55 in the numerator.

Divide 55 with 11 to get 5

So, Divide 110 with 11 to get the denominator of unknown number.

110/11 = 10

The numerators are the same, so the denominators are equal to each other.

So, the unknown value is 5/10 = 55/110

\(\frac{5}{10}\)

Question 9.

\(\frac{3}{9}=\frac{9}{?}\)

_____

Answer:

\(\frac{9}{27}\)

Explanation:

Write an equivalent ratio with 9 in the numerator.

Multiply 3 with 3 to get 9

So, Multiply 9 with 3 to get the denominator of unknown number.

9 × 3 = 27

The numerators are the same, so the denominators are equal to each other.

So, the unknown value is 9/27 = 3/9

\(\frac{9}{27}\)

Question 10.

\(\frac{?}{6}=\frac{16}{24}\)

_____

Answer:

\(\frac{4}{6}\)

Explanation:

Use common denominators to write equivalent ratios.

Divide 24 with 4 to get 6.

So, divide 16 with 4 to know the unknown number of numerator

16/4 = 4

The denominators are the same, so the numerators are equal to each other.

So, the unknown value is 4/6 = 16/24

\(\frac{4}{6}\)

Question 11.

Mavis walks 3 miles in 45 minutes. How many minutes will it take Mavis to walk 9 miles?

_____ minutes

Answer:

135 minutes

Explanation:

Mavis walks 3 miles in 45 minutes.

For 9 miles, (9 × 45)/3 = 135 minutes

Question 12.

The ratio of boys to girls in a choir is 3 to 8. There are 32 girls in the choir. How many members are in the choir?

_____ members

Answer:

12 members

Explanation:

The ratio of boys to girls in a choir is 3 to 8.

3/8 × 4/ 4 = 12/32

So, if there are 32 girls in the choir, there will be 12 boys present.

Question 13.

Use Reasoning Is the unknown value in \(\frac{2}{3}=\frac{?}{18}\) the same as the unknown value in \(\frac{3}{2}=\frac{18}{?}\)? Explain.

Type below:

___________

Answer:

12

Explanation:

\(\frac{2}{3}=\frac{?}{18}\)

2/3 × 6/6 = 12/18

the unknown value is 12

\(\frac{3}{2}=\frac{18}{?}\)

3/2 × 6/6 = 18/12

the unknown value is 12

### Problem Solving + Applications – Page No. 238

**Solve by finding an equivalent ratio.**

Question 14.

It takes 8 minutes for Sue to make 2 laps around the go-kart track. How many laps can Sue complete in 24 minutes?

_____ laps

Answer:

6 laps

Explanation:

It takes 8 minutes for Sue to make 2 laps around the go-kart track.

For 24 minutes, (24 × 2)/8 = 48/8 =6

Question 15.

The width of Jay’s original photo is 8 inches. The length of the original photo is 10 inches. He prints a smaller version that has an equivalent ratio of width to length. The width of the smaller version is 4 inches less than the width of the original. What is the length of the smaller version?

_____ inches

Answer:

5 inches

Explanation:

The width of Jay’s original photo is 8 inches. The length of the original photo is 10 inches.

8/10

He prints a smaller version that has an equivalent ratio of width to length. The width of the smaller version is 4 inches less than the width of the original.

4/s

8/10 ÷ 2/2 = 4/5

5 inches

Question 16.

Ariel bought 3 raffle tickets for $5. How many tickets could Ariel buy for $15?

_____ tickets

Answer:

9 tickets

Explanation:

Ariel bought 3 raffle tickets for $5.

For $15, ($15 × 3)/ $5 = 45/5 = 9

Question 17.

What’s the Error? Greg used the steps shown to find the unknown value. Describe his error and give the correct solution.

\(\frac{2}{6}=\frac{?}{12}\)

\(\frac{2+6}{6+6}=\frac{?}{12}\)

\(\frac{8}{12}=\frac{?}{12}\)

The unknown value is 8.

Type below:

___________

Answer:

Greg added 6 to the numerator and denominator which is not correct to find the unknown value.

\(\frac{2}{6}=\frac{?}{12}\)

2/6 × 2/2 = 4/12

4 is the unknown value.

Question 18.

Courtney bought 3 maps for $10. Use the table of equivalent ratios to find how many maps she can buy for $30.

Type below:

___________

Answer:

Explanation:

3/10 × 3/3 = 9/30

### Use Equivalent Ratios – Page No. 239

**Use equivalent ratios to find the unknown value.**

Question 1.

\(\frac{4}{10}=\frac{?}{40}\)

_____

Answer:

\(\frac{16}{40}\)

Explanation:

4/10 × 4/4 = 16/40

Question 2.

\(\frac{3}{24}=\frac{33}{?}\)

_____

Answer:

\(\frac{33}{264}\)

Explanation:

3/24 × 11/11 = 33/264

Question 3.

\(\frac{7}{?}=\frac{21}{27}\)

_____

Answer:

\(\frac{7}{9}\)

Explanation:

21/27 ÷ 3/3 = 7/9

Question 4.

\(\frac{?}{9}=\frac{12}{54}\)

_____

Answer:

\(\frac{2}{9}\)

Explanation:

12/54 ÷ 6/6 = 2/9

Question 5.

\(\frac{3}{2}=\frac{12}{?}\)

_____

Answer:

\(\frac{12}{8}\)

Explanation:

3/2 × 4/4 = 12/8

Question 6.

\(\frac{4}{5}=\frac{?}{40}\)

_____

Answer:

\(\frac{32}{40}\)

Explanation:

4/5 × 8/8 = 32/40

Question 7.

\(\frac{?}{2}=\frac{45}{30}\)

_____

Answer:

\(\frac{3}{2}\)

Explanation:

45/30 ÷ 15/15 = 3/2

Question 8.

\(\frac{45}{?}=\frac{5}{6}\)

_____

Answer:

\(\frac{45}{54}\)

Explanation:

5/6 × 9/9 = 45/54

**Problem Solving**

Question 9.

Honeybees produce 7 pounds of honey for every 1 pound of beeswax they produce. Use equivalent ratios to find how many pounds of honey are produced when 25 pounds of beeswax are produced.

_____ pounds

Answer:

175 pounds

Explanation:

Honeybees produce 7 pounds of honey for every 1 pound of beeswax they produce.

7/1

25 pounds of beeswax, 25 × 7 = 175 pounds

Question 10.

A 3-ounce serving of tuna provides 21 grams of protein. Use equivalent ratios to find how many grams of protein are in 9 ounces of tuna.

_____ grams of protein

Answer:

63 grams of protein

Explanation:

A 3-ounce serving of tuna provides 21 grams of protein.

For 9 ounces of tuna, (21 × 9)/3 = 63

Question 11.

Explain how using equivalent ratios is like adding fractions with unlike denominators.

Type below:

___________

Answer:

Equivalent ratios have different numbers but represent the same relationship. In this tutorial, you’ll see how to find equivalent ratios by first writing the given ratio as a fraction. And it cannot be the same by adding tow fraction with different ratio

### Lesson Check – Page No. 240

Question 1.

Jaron paid $2.70 for 6 juice boxes. How much should Jaron expect to pay for 18 juice boxes?

$ _____

Answer:

$8.1

Explanation:

Jaron paid $2.70 for 6 juice boxes. For 6 boxes he paid $2.70.

For 18 juice boxes, (18 × $2.70)/6 = $8.1

Question 2.

A certain shade of orange paint is made by mixing 3 quarts of red paint with 2 quarts of yellow paint. To make more paint of the same shade, how many quarts of yellow paint should be mixed with 6 quarts of red paint?

_____ quarts

Answer:

4 quarts

Explanation:

A certain shade of orange paint is made by mixing 3 quarts of red paint with 2 quarts of yellow paint.

3 quarts of red paint is mixed with 2 quarts of yellow paint

So, 6 quarts of red paint is mixed with 6/3 × 2 = 4 quarts of yellow paint

**Spiral Review**

Question 3.

What is the quotient \(2 \frac{4}{5} \div 1 \frac{1}{3}\)?

______ \(\frac{□}{□}\)

Answer:

2\(\frac{1}{10}\)

Explanation:

2 4/5 = 14/5 = 2.8

1 1/3 = 4/3 = 1.333

2.8/1.333 = 2 1/10

Question 4.

What is the quotient \(-2 \frac{2}{3}\)?

______ \(\frac{□}{□}\)

Answer:

1\(\frac{11}{16}\)

Explanation:

−4 1/2 ÷ -2 2/3

1 11/16

Question 5.

On a map, a clothing store is located at (–2, –3). A seafood restaurant is located 6 units to the right of the clothing store. What are the coordinates of the restaurant?

Type below:

___________

.Answer:

(4, -3)

Explanation:

On a map, a clothing store is located at (–2, –3). A seafood restaurant is located 6 units to the right of the clothing store.

|-2| = 2

2 + 0 = 2

0+4 = 4

2 + 4 = 6 units

Question 6.

Marisol plans to make 9 mini-sandwiches for every 2 people attending her party. Write a ratio that is equivalent to Marisol’s ratio.

Type below:

___________

Answer:

27/6 and 45/10

Explanation:

Marisol plans to make 9 mini-sandwiches for every 2 people attending her party. 9/2 × 3/3 = 27/6

9/2 × 5/5 = 45/10

### Mid-Chapter Checkpoint – Vocabulary – Page No. 241

**Choose the best term from the box to complete the sentence.**

Question 1.

A _____ is a rate that makes a comparison to 1 unit.

Type below:

___________

Answer:

rate

Question 2.

Two ratios that name the same comparison are _____ .

Type below:

___________

Answer:

Equivalent Ratios

**Concepts and Skills**

Question 3.

Write the ratio of red circles to blue squares.

Type below:

___________

Answer:

3 : 5

Explanation:

There are 3 red counter and 5 square boxes.

So, the ratio is 3 : 5

**Write the ratio in two different ways.**

Question 4.

8 to 12

Type below:

___________

Answer:

\(\frac{8}{12}\)

8 : 12

Explanation:

8 to 12 as a fraction \(\frac{8}{12}\)

8 to 12 with a colon 8 : 12

Question 5.

7 : 2

Type below:

___________

Answer:

\(\frac{7}{2}\)

7 to 2

Explanation:

7 : 2 as a fraction \(\frac{7}{2}\)

7 : 2 using words 7 to 2

Question 6.

\(\frac{5}{9}\)

Type below:

___________

Answer:

5 to 9

5 : 9

Explanation:

\(\frac{5}{9}\) using words 5 to 9

\(\frac{5}{9}\) with a colon 5 : 9

Question 7.

11 to 3

Type below:

___________

Answer:

\(\frac{11}{3}\)

11 : 3

Explanation:

11 to 3 as a fraction \(\frac{11}{3}\)

11 to 3 with a colon 11 : 3

**Write two equivalent ratios.**

Question 8.

\(\frac{2}{7}\)

Type below:

___________

Answer:

\(\frac{2}{7}\) = \(\frac{4}{14}\), \(\frac{6}{21}\)

Explanation:

The original ratio is 2/7. Shade the row for 2 and the row for 7 on the multiplication table.

The column for 2 shows there are 2 ∙ 2, when there are 2 ∙ 7. So, 2/7 equal to 4/14

The column for 3 shows there are 3 ∙ 2, when there are 3 ∙ 7. So, 2/7 equal to 6/21

Question 9.

\(\frac{6}{5}\)

Type below:

___________

Answer:

\(\frac{6}{5}\) = \(\frac{12}{10}\), \(\frac{18}{15}\)

Explanation:

The original ratio is 6/5. Shade the row for 6 and the row for 5 on the multiplication table.

The column for 2 shows there are 2 ∙ 6, when there are 2 ∙ 5. So, 6/5 equal to 12/10

The column for 3 shows there are 3 ∙ 6, when there are 3 ∙ 5. So, 6/5 equal to 18/15

Question 10.

\(\frac{9}{12}\)

Type below:

___________

Answer:

\(\frac{9}{12}\) = \(\frac{18}{24}\), \(\frac{27}{36}\)

Explanation:

The original ratio is 9/12. Shade the row for 9 and the row for 12 on the multiplication table.

The column for 2 shows there are 2 ∙ 9, when there are 2 ∙ 12. So, 9/12 equal to 18/24

The column for 3 shows there are 3 ∙ 9, when there are 3 ∙ 12. So, 9/12 equal to 27/36

Question 11.

\(\frac{18}{6}\)

Type below:

___________

Answer:

\(\frac{18}{6}\) = \(\frac{36}{12}\), \(\frac{54}{18}\)

Explanation:

The original ratio is 18/6. Shade the row for 18 and the row for 6 on the multiplication table.

The column for 2 shows there are 2 ∙ 18, when there are 2 ∙ 6. So, 18/6 equal to 36/12

The column for 3 shows there are 3 ∙ 18, when there are 3 ∙ 6. So, 18/6 equal to 54/18

**Find the unknown value.**

Question 12.

\(\frac{15}{?}=\frac{5}{10}\)

Type below:

___________

Answer:

30

Explanation:

5/10 × 3/3 = 15/30

So, the unknown number is 30

Question 13.

\(\frac{?}{9}=\frac{12}{3}\)

Type below:

___________

Answer:

36

Explanation:

12/3 × 3/3 = 36/9

So, the unknown number is 36

Question 14.

\(\frac{48}{16}=\frac{?}{8}\)

Type below:

___________

Answer:

24

Explanation:

48/16 ÷ 2/2 = 24/8

So, the unknown number is 24

Question 15.

\(\frac{9}{36}=\frac{3}{?}\)

Type below:

___________

Answer:

12

Explanation:

9/36 ÷ 3/3 = 3/12

So, the unknown number is 12

### Page No. 242

Question 16.

There are 36 students in the chess club, 40 students in the drama club, and 24 students in the film club. What is the ratio of students in the drama club to students in the film club?

Type below:

___________

Answer:

40 to 24

Explanation:

There are 36 students in the chess club, 40 students in the drama club, and 24 students in the film club.

The ratio of students in the drama club to students in the film club 40 to 24

Question 17.

A trail mix has 4 cups of raisins, 3 cups of dates, 6 cups of peanuts, and 2 cups of cashews. Which ingredients are in the same ratio as cashews to raisins?

Type below:

___________

Answer:

dates to peanuts

Explanation:

A trail mix has 4 cups of raisins, 3 cups of dates, 6 cups of peanuts, and 2 cups of cashews.

cashews to raisins = 2/4 = 1/2

dates to peanuts = 3/6 = 1/2

Question 18.

There are 32 adults and 20 children at a school play. What is the ratio of children to people at the school play?

Type below:

___________

Answer:

5 to 13

Explanation:

There are 32 adults and 20 children at a school play.

people = 32 + 20 = 52

the ratio of children to people at the school play = 20/52 = 5/13

Question 19.

Sonya got 8 out of 10 questions right on a quiz. She got the same score on a quiz that had 20 questions. How many questions did Sonya get right on the second quiz? How many questions did she get wrong on the second quiz?

Type below:

___________

Answer:

4 wrong

Explanation:

8/10 = x/20

So, 10 × 2 = 20, so 8 × 2=16

so she got 16 out of 20 right and 20 – 16 = 4

She got 4 wrong.

### Share and Show – Page No. 245

**Write the rate as a fraction. Then find the unit rate.**

Question 1.

Sara drove 72 miles on 4 gallons of gas.

_____ miles/gallon

Answer:

18 miles/gallon

Explanation:

Sara drove 72 miles on 4 gallons of gas.

72/4

Divide 72/4 with 4/4

72/4 ÷ 4/4 = 18

Question 2.

Dean paid $27.00 for 4 movie tickets.

$ _____ per ticket

Answer:

$6.75 per ticket

Explanation:

Dean paid $27.00 for 4 movie tickets.

$27.00/4

Divide $27.00/4 with 4/4

$27.00/4 ÷ 4/4 = $6.75

Question 3.

Amy and Mai have to read Bud, Not Buddy for a class. Amy reads 20 pages in 2 days. Mai reads 35 pages in 3 days. Who reads at a faster rate?

___________

Answer:

Mai reads at a faster rate

Explanation:

Amy and Mai have to read Bud, Not Buddy for a class.

Amy reads 20 pages in 2 days. 20/2 = 10 pages for each day

Mai reads 35 pages in 3 days. 35/3 = 11.66 pages for each day

Mai reads at a faster rate

Question 4.

An online music store offers 5 downloads for $6.25. Another online music store offers 12 downloads for $17.40. Which store offers the better deal?

___________

Answer:

An online music store offers 5 downloads for $6.25 offers the better deal

Explanation:

An online music store offers 5 downloads for $6.25.

$6.25/5 = $1.25

Another online music store offers 12 downloads for $17.40.

$17.40/12 = $1.45

An online music store offers 5 downloads for $6.25 offers the better deal

**On Your Own**

**Write the rate as a fraction. Then find the unit rate.**

Question 5.

A company packed 108 items in 12 boxes.

Type below:

___________

Answer:

9

Explanation:

A company packed 108 items in 12 boxes.

108/12

Divide 108/12 with 12/12

108/12 ÷ 12/12 = 9

Question 6.

There are 112 students for 14 teachers.

Type below:

___________

Answer:

8

Explanation:

There are 112 students for 14 teachers.

112/14

Divide 112/14 with 14/14

112/14 ÷ 14/14 = 8

Question 7.

Geoff charges $27 for 3 hours of swimming lessons. Anne charges $31 for 4 hours. How much more does Geoff charge per hour than Anne?

$ _____

Answer:

$1.25

Explanation:

Geoff charges $27 for 3 hours of swimming lessons.

$27/3 = $9 for an hour

Anne charges $31 for 4 hours.

$31/4 = $7.75

$9 – $7.75 = $1.25

Geoff charge $1.25 per hour more than Anne

Question 8.

Compare One florist made 16 bouquets in 5 hours. A second florist made 40 bouquets in 12 hours. Which florist makes bouquets at a faster rate?

Type below:

___________

Answer:

A second florist made 40 bouquets in 12 hours at a faster rate

Explanation:

Compare One florist made 16 bouquets in 5 hours.

16/5 = 3.2

A second florist made 40 bouquets in 12 hours.

40/12 = 3.333

A second florist made 40 bouquets in 12 hours at a faster rate

**Tell which rate is faster by comparing unit rates.**

Question 9.

\(\frac{160 \mathrm{mi}}{2 \mathrm{hr}} \text { and } \frac{210 \mathrm{mi}}{3 \mathrm{hr}}\)

Type below:

___________

Answer:

160mi/2hr

Explanation:

160mi/2hr ÷ 2/2 = 80mi/hr

210mi/3hr = 70mi/hr

80mi/hr > 70mi/hr

Question 10.

\(\frac{270 \mathrm{ft}}{9 \mathrm{min}} \text { and } \frac{180 \mathrm{ft}}{9 \mathrm{min}}\)

Type below:

___________

Answer:

270ft/9min

Explanation:

270ft/9min = 30ft/min

180ft/9min = 20ft/min

30ft/min > 20ft/min

Question 11.

\(\frac{250 \mathrm{m}}{10 \mathrm{s}} \text { and } \frac{120 \mathrm{m}}{4 \mathrm{s}}\)

Type below:

___________

Answer:

250m/10s

Explanation:

250m/10s = 25m/s

120m/4s = 20m/s

25m/s > 20m/s

### Unlock the Problem – Page No. 246

Question 12.

Ryan wants to buy treats for his puppy. If Ryan wants to buy the treats that cost the least per pack, which treat should he buy? Explain.

a. What do you need to find?

Type below:

___________

Answer:

We need to find that cost the least per pack

Question 12.

b. Find the price per pack for each treat.

Type below:

___________

Answer:

Pup bites = $5.76/4 ÷ 4/4 = $1.44

Doggie Treats = $7.38/6 ÷ 6/6 = $1.23

Pupster snacks = $7.86/6 ÷ 6/6 = $1.31

Nutri-Biscuits = $9.44/8 ÷ 8/8 = $1.18

Question 12.

c. Complete the sentences

The treat with the highest price per pack is _____.

The treat with the lowest price per pack is _____.

Ryan should buy _____ because _____.

Type below:

___________

Answer:

The treat with the highest price per pack is Pup bites.

The treat with the lowest price per pack is Nutri-Biscuits.

Ryan should buy Nutri-Biscuits because it has the least cost.

Question 13.

Reason Abstractly What information do you need to consider in order to decide whether one product is a better deal than another? When might the lower unit rate not be the best choice? Explain.

Type below:

___________

Answer:

We will consider the low cost in order to decide whether one product is a better deal than another.

The lower unit rate is not the best choice. Because it will show the highest cost.

Question 14.

Select the cars that get a higher mileage per gallon of gas than a car that gets 25 miles per gallon. Mark all that apply.

Options:

a. Car A 22 miles per 1 gallon

b. Car B 56 miles per 2 gallons

c. Car C 81 miles per 3 gallons

d. Car D 51 miles per 3 gallons

Answer:

b. Car B 56 miles per 2 gallons

c. Car C 81 miles per 3 gallons

Explanation:

22/1 = 22

56/2 = 28

81/3 = 27

51/3 = 17

### Find Unit Rates – Page No. 247

**Write the rate as a fraction. Then find the unit rate.**

Question 1.

A wheel rotates through 1,800º in 5 revolutions.

Type below:

___________

Answer:

Explanation:

A wheel rotates through 1,800º in 5 revolutions.

1,800º/5 revolutions

1,800º/5 revolutions ÷ 5/5 = 360º/1revolution

Question 2.

There are 312 cards in 6 decks of playing cards.

Type below:

___________

Answer:

52 cards/1 deck of playing cards

Explanation:

There are 312 cards in 6 decks of playing cards.

312/6 ÷ 6/6 = 52 cards/1 deck of playing cards

Question 3.

Bana ran 18.6 miles of a marathon in 3 hours.

Type below:

___________

Answer:

6.2 miles/hour

Explanation:

Bana ran 18.6 miles of a marathon in 3 hours.

18.6 miles/ 3 hours ÷ 3/3 = 6.2 miles/hour

Question 4.

Cameron paid $30.16 for 8 pounds of almonds.

Type below:

___________

Answer:

$3.77/1 pound

Explanation:

Cameron paid $30.16 for 8 pounds of almonds.

$30.16/8 pounds ÷ 8/8 = $3.77/1 pound

**Compare unit rates.**

Question 5.

An online game company offers a package that includes 2 games for $11.98. They also offer a package that includes 5 games for $24.95. Which package is a better deal?

_____ package

Answer:

5 game package

Explanation:

An online game company offers a package that includes 2 games for $11.98.

$11.98/2 = $5.99

They also offer a package that includes 5 games for $24.95.

$24.95/5 = $4.99

Question 6.

At a track meet, Samma finished the 200-meter race in 25.98 seconds. Tom finished the 100-meter race in 12.54 seconds. Which runner ran at a faster average rate?

___________

Answer:

Tom

Explanation:

At a track meet, Samma finished the 200-meter race in 25.98 seconds.

200/25.98 seconds = 7.698 – meter/1 sec

Tom finished the 100-meter race in 12.54 seconds.

100 – meter/12.54 seconds = 7.974 – meter/1 sec

**Problem Solving**

Question 7.

Sylvio’s flight is scheduled to travel 1,792 miles in 3.5 hours. At what average rate will the plane have to travel to complete the trip on time?

Type below:

___________

Answer:

512 miles per hour

Explanation:

Sylvio’s flight is scheduled to travel 1,792 miles in 3.5 hours.

1,792 miles/3.5 hours ÷ 3.5/3.5 = 512 miles per hour

Question 8.

Rachel bought 2 pounds of apples and 3 pounds of peaches for a total of $10.45. The apples and peaches cost the same amount per pound. What was the unit rate?

Type below:

___________

Answer:

$2.09 per pound

Explanation:

Rachel bought 2 pounds of apples and 3 pounds of peaches for a total of $10.45.

The apples and peaches cost the same amount per pound.

2 + 3 = 5

$10.45/5 = $2.09 per pound

Question 9.

Write a word problem that involves comparing unit rates.

Type below:

___________

Answer:

At a track meet, Samma finished the 200-meter race in 25.98 seconds. Tom finished the 100-meter race in 12.54 seconds. Which runner ran at a faster average rate?

At a track meet, Samma finished the 200-meter race in 25.98 seconds.

200/25.98 seconds = 7.698 – meter/1 sec

Tom finished the 100-meter race in 12.54 seconds.

100 – meter/12.54 seconds = 7.974 – meter/1 sec

Tom

### Lesson Check – Page No. 248

Question 1.

Cran–Soy trail mix costs $2.99 for 5 ounces, Raisin–Nuts mix costs $3.41 for 7 ounces, Lots of Cashews mix costs $7.04 for 8 ounces, and Nuts for You mix costs $2.40 for 6 ounces. List the trail mix brands in order from the least expensive to the most expensive.

Type below:

___________

Answer:

Nuts for You, Raisin–Nuts, Cran–Soy trail mix, Lots of Cashews mix

Explanation:

Cran–Soy trail mix costs $2.99 for 5 ounces,

$2.99/5 = $0.598

Raisin–Nuts mix costs $3.41 for 7 ounces,

$3.41/7 = $0.487

Lots of Cashews mix costs $7.04 for 8 ounces,

$7.04/8 = $0.88

and Nuts for You mix costs $2.40 for 6 ounces.

$2.40/6 = $0.4

Question 2.

Aaron’s heart beats 166 times in 120 seconds. Callie’s heart beats 88 times in 60 seconds. Emma’s heart beats 48 times in 30 seconds. Galen’s heart beats 22 times in 15 seconds. Which two students’ heart rates are equivalent?

Type below:

___________

Answer:

Callie and Galen

Explanation:

Aaron’s heart beats 166 times in 120 seconds.

166/120 = 1.3833

Callie’s heart beats 88 times in 60 seconds.

88/60 = 1.4666

Emma’s heart beats 48 times in 30 seconds.

48/30 = 1.6

Galen’s heart beats 22 times in 15 seconds.

22/15 = 1.4666

**Spiral Review**

Question 3.

Courtlynn combines \(\frac{7}{8}\) cup sour cream with \(\frac{1}{2}\) cup cream cheese. She then divides the mixture between 2 bowls. How much mixture does Courtlynn put in each bowl?

\(\frac{□}{□}\) cup

Answer:

\(\frac{11}{16}\) cup

Explanation:

Courtlynn combines \(\frac{7}{8}\) cup sour cream with \(\frac{1}{2}\) cup cream cheese.

7/8 + 1/2 = 11/8

11/8 ÷ 2 = 11/8 × 1/2 = 11/16 cup

Question 4.

Write a comparison using < or > to show the relationship between |-\(\frac{2}{3}\)| and – \(\frac{5}{6}\).

Type below:

___________

Answer:

>

Explanation:

|-\(\frac{2}{3}\)| = 2/3 = 0.666

– \(\frac{5}{6}\) = -0.8333

|-\(\frac{2}{3}\)| > – \(\frac{5}{6}\)

Question 5.

There are 18 tires on one truck. How many tires are on 3 trucks of the same type?

_____ tires

Answer:

54 tires

Explanation:

There are 18 tires on one truck.

For 3 trucks, (3 × 18)/1 = 54 tires

Question 6.

Write two ratios that are equivalent to \(\frac{5}{6}\).

Type below:

___________

Answer:

\(\frac{5}{6}\) = \(\frac{10}{12}\), \(\frac{15}{18}\)

Explanation:

5/6 × 2/2 = 10/12

5/6 × 3/3 = 15/18

### Share and Show – Page No. 251

**Use a unit rate to find the unknown value.**

Question 1.

\(\frac{10}{?}=\frac{6}{3}\)

_____

Answer:

5

Explanation:

6/3 ÷ 3/3 = 2/1

2/1 × 5/5 = 10/1

The unknown value is 5

Question 2.

\(\frac{6}{8}=\frac{?}{20}\)

_____

Answer:

15

Explanation:

6/8 ÷ 8/8 = 0.75/1

0.75/1 × 20/20 = 15/20

The unknown value is 15

**On Your Own**

**Use a unit rate to find the unknown value.**

Question 3.

\(\frac{40}{8}=\frac{45}{?}\)

_____

Answer:

9

Explanation:

40/8 ÷ 8/8 = 5/1

5/1 × 9/9 = 45/9

The unknown value is 9

Question 4.

\(\frac{42}{14}=\frac{?}{5}\)

_____

Answer:

15

Explanation:

42/14 ÷ 14/14 = 3/1

3/1 × 5/5 = 15/5

The unknown value is 15

Question 5.

\(\frac{?}{2}=\frac{56}{8}\)

_____

Answer:

14

Explanation:

56/8 ÷ 8/8 = 7/1

7/1 × 2/2 = 14/2

The unknown value is 14

Question 6.

\(\frac{?}{4}=\frac{26}{13}\)

_____

Answer:

8

Explanation:

26/13 ÷ 13/13 = 2/1

2/1 × 4/4 = 8/4

The unknown value is 8

**Practice: Copy and Solve Draw a bar model to find the unknown value.**

Question 7.

\(\frac{4}{32}=\frac{9}{?}\)

_____

Answer:

Explanation:

4/32 ÷ 32/32 = 0.125/1

0.125/1 × 72/72 = 9/72

The unknown value is 72

Question 8.

\(\frac{9}{3}=\frac{?}{4}\)

_____

Answer:

12

Explanation:

9/3 ÷ 3/3 = 3/1

3/1 × 4/4 = 12/4

The unknown value is 12

Question 9.

\(\frac{?}{14}=\frac{9}{7}\)

_____

Answer:

Explanation:

9/7 ÷ 7/7 = 1.2857/1

1.2857/1 × 14/14 = 18/14

The unknown value is 18

Question 10.

\(\frac{3}{?}=\frac{2}{1.25}\)

_____

Answer:

1.875

Explanation:

2/1.25 ÷ 1.25/1.25 = 1.6/1

1.6/1 × 1.875/1.875 = 3/1.875

The unknown value is 1.875

Question 11.

Communicate Explain how to find an unknown value in a ratio by using a unit rate.

Type below:

___________

Answer:

Firstly, Identify the known ratio, where both values are known. Then, Identify the ratio with one known value and one unknown value. Next, Use the two ratios to create a proportion. Finally, Cross-multiply to solve the problem.

Question 12.

Savannah is tiling her kitchen floor. She bought 8 cases of tile for $192. She realizes she bought too much tile and returns 2 unopened cases to the store. What was her final cost for tile?

$ _____

Answer:

$144

Explanation:

Savannah is tiling her kitchen floor. She bought 8 cases of tile for $192.

$192/8 ÷ 8/8 = $24 per each case of tile

She realizes she bought too much tile and returns 2 unopened cases to the store.

So, she bought 8 – 2 = 6 cases of tiles.

6 × $24 = $144

### Problem Solving + Applications – Page No. 251

**Pose a Problem**

Question 13.

Josie runs a T-shirt printing company. The table shows the length and width of four sizes of T-shirts. The measurements of each size T-shirt form equivalent ratios.

What is the length of an extra-large T-shirt?

Write two equivalent ratios and find the unknown value:

The length of an extra-large T-shirt is 36 inches.

Write a problem that can be solved by using the information in the table and could be solved by using equivalent ratios

Type below:

___________

Answer:

Small = 27/18 ÷ 18/18 = 1.5

Medium = 30/20 = 3/2 = 1.5

Large = 1.5/1 × 22/22 = 33/22

the length of an extra-large T-shirt = 1.5/1 × 24/24 = 36/24

What is the length of an large T-shirt?

Write two equivalent ratios and find the unknown value?

Large = 1.5/1 × 22/22 = 33/22

33/22 × 2/2 = 66/44

33/22 × 3/3 = 99/66

Question 14.

Peri earned $27 for walking her neighbor’s dog 3 times. If Peri earned $36, how many times did she walk her neighbor’s dog? Use a unit rate to find the unknown value.

_____ times

Answer:

4 times

Explanation:

Peri earned $27 for walking her neighbor’s dog 3 times.

If Peri earned $36, ($36 × 3)/$27 = 4

### Use Unit Rates – Page No. 253

**Use a unit rate to find the unknown value.**

Question 1.

\(\frac{34}{7}=\frac{?}{7}\)

_____

Answer:

34

Explanation:

34/7 ÷ 7/7 = 4.8571/1

4.8571/1 × 7/7 = 34

The unknown value is 34

Question 2.

\(\frac{16}{32}=\frac{?}{14}\)

_____

Answer:

7

Explanation:

16/32 ÷ 32/32 = 0.5/1

0.5/1 × 14/14 = 7/1

The unknown value is 7

Question 3.

\(\frac{18}{?}=\frac{21}{7}\)

_____

Answer:

6

Explanation:

21/7 ÷ 7/7 = 3/1

3/1 × 6/6 = 18/6

The unknown value is 6

Question 4.

\(\frac{?}{16}=\frac{3}{12}\)

_____

Answer:

4

Explanation:

3/12 ÷ 12/12 = 0.25/1

0.25/1 × 16/16 = 4

The unknown value is 4

**Draw a bar model to find the unknown value.**

Question 5.

\(\frac{15}{45}=\frac{6}{?}\)

_____

Answer:

18

Explanation:

15/45 ÷ 45/45 = 1/3

1/3 × 6/6 = 6/18

The unknown value is 18

Question 6.

\(\frac{3}{6}=\frac{?}{7}\)

_____

Answer:

3.5

Explanation:

3/6 ÷ 6/6 = 1/2

1/2 × 3.5/3.5 = 3.5/7

The unknown value is 3.5

**Problem Solving**

Question 7.

To stay properly hydrated, a person should drink 32 fluid ounces of water for every 60 minutes of exercise. How much water should Damon drink if he rides his bike for 135 minutes?

_____ fluid ounces

Answer:

72 fluid ounces

Explanation:

To stay properly hydrated, a person should drink 32 fluid ounces of water for every 60 minutes of exercise.

If he rides his bike for 135 minutes, (135 × 32)/60 = 72

Question 8.

Lillianne made 6 out of every 10 baskets she attempted during basketball practice. If she attempted to make 25 baskets, how many did she make?

_____ baskets

Answer:

15 baskets

Explanation:

Lillianne made 6 out of every 10 baskets she attempted during basketball practice. If she attempted to make 25 baskets,

(25 × 6)/10 = 15 baskets

Question 9.

Give some examples of real-life situations in which you could use unit rates to solve an equivalent ratio problem.

Type below:

___________

Answer:

1) If a 10-ounce box of cereal costs $3 and a 20-ounce box of cereal costs $5, the 20 ounce box is the better value because each ounce of cereal is cheaper.

2) Yoda Soda is the intergalactic party drink that will have all your friends saying, “Mmmmmm, good this is!”

You are throwing a party, and you need 555 liters of Yoda Soda for every 121212 guests.

If you have 363636 guests, how many liters of Yoda Soda do you need?

### Lesson Check – Page No. 254

Question 1.

Randi’s school requires that there are 2 adult chaperones for every 18 students when the students go on a field trip to the museum. If there are 99 students going to the museum, how many adult chaperones are needed?

_____ chaperones

Answer:

11 chaperones

Explanation:

Randi’s school requires that there are 2 adult chaperones for every 18 students when the students go on a field trip to the museum.

If there are 99 students going to the museum, (99 × 2)/18 = 11 chaperones

Question 2.

Landry’s neighbor pledged $5.00 for every 2 miles he swims in a charity swim-a-thon. If Landry swims 3 miles, how much money will his neighbor donate?

$ _____

Answer:

$7.5

Explanation:

Landry’s neighbor pledged $5.00 for every 2 miles he swims in a charity swim-a-thon. If Landry swims 3 miles, 15/2 = $7.5

**Spiral Review**

Question 3.

Describe a situation that could be represented by –8.

Type below:

___________

Answer:

In Alaska the normal temperature in December was 3 degrees. Scientist predicted that by February the temperature would drop 11 degrees. What is the predicted temperature for February? The answer is -8.

Question 4.

What are the coordinates of point G?

Type below:

___________

Answer:

(-2, 0.5)

Explanation:

The x-coordinate is -2

The y-coordinate is 0.5

Question 5.

Gina bought 6 containers of yogurt for $4. How many containers of yogurt could Gina buy for $12?

_____ containers

Answer:

18 containers

Explanation:

Gina bought 6 containers of yogurt for $4.

For $12, ($12 × 6)/$4 = 18

Question 6.

A bottle containing 64 fluid ounces of juice costs $3.84. What is the unit rate?

$ _____

Answer:

$0.06

Explanation:

A bottle containing 64 fluid ounces of juice costs $3.84.

$3.84/64 = $0.06

### Share and Show – Page No. 257

**A redwood tree grew at a rate of 4 feet per year. Use this information for 1–3.**

Question 1.

Complete the table of equivalent ratios for the first 5 years.

Type below:

___________

Answer:

Explanation:

A redwood tree grew at a rate of 4 feet per year.

For 2 years, 2 × 4 = 8ft

For 3 years, 3 × 4 = 12ft

For 4 years, 4 × 4 = 16ft

For 5 years, 5 × 4 = 20ft

Question 2.

Write ordered pairs, letting the x-coordinate represent time in years and the y-coordinate represent height in feet.

Type below:

___________

Answer:

(1, 4), (2, 8), (3, 12), (4, 16), (5, 20)

Question 3.

Use the ordered pairs to graph the tree’s growth over time.

Type below:

___________

Answer:

**On Your Own**

**The graph shows the rate at which Luis’s car uses gas, in miles per gallon. Use the graph for 4–8.**

Question 4.

Complete the table of equivalent ratios.

Type below:

___________

Answer:

30/1, 60/2, 90/3, 120/4, 150/5

Question 5.

Find the car’s unit rate of gas usage.

Type below:

___________

Answer:

30mi/gal

Question 6.

How far can the car go on 5 gallons of gas?

_____ miles

Answer:

150 miles

Explanation:

the car go on 5 gallons of gas, 150/5

Question 7.

Estimate the amount of gas needed to travel 50 miles.

Type below:

___________

Answer:

5/3

Explanation:

30/1,

50/30 = 5/3

Question 8.

Ellen’s car averages 35 miles per gallon of gas. If you used equivalent ratios to graph her car’s gas usage, how would the graph differ from the graph of Luis’s car’s gas usage?

Type below:

___________

Answer:

The distance is high for Ellen’s car’s gas usage compared to Luis’s car’s gas usage per one gal

Explanation:

35/1 × 2/2 = 70/2

35/1 × 3/3 = 105/3

35/1 × 4/4 = 140/4

35/1 × 5/5 = 175/5

### Problem Solving + Applications – Page No. 258

Question 9.

Look for Structure The graph shows the depth of a submarine over time. Use equivalent ratios to find the number of minutes it will take the submarine to descend 1,600 feet.

_____ minutes

Answer:

8 minutes

Explanation:

200/1 × 8/8 = 1600/8

Question 10.

The graph shows the distance that a plane flying at a steady rate travels over time. Use equivalent ratios to find how far the plane travels in 13 minutes.

_____ miles

Answer:

91 miles

Explanation:

7/1 × 13/13 = 91/13

Question 11.

Sense or Nonsense? Emilio types at a rate of 84 words per minute. He claims that he can type a 500-word essay in 5 minutes. Is Emilio’s claim sense or nonsense? Use a graph to help explain your answer.

Type below:

___________

Answer:

He said that he can write 84 in 60sec ,500 words will be written in 500×60/84=357 it’s a nonsense

Question 12.

The Tuckers drive at a rate of 20 miles per hour through the mountains. Use the ordered pairs to graph the distance traveled over time.

Type below:

___________

Answer:

### Equivalent Ratios and Graphs – Page No. 259

**Christie makes bracelets. She uses 8 charms for each bracelet. Use this information for 1–3.**

Question 1.

Complete the table of equivalent ratios for the first 5 bracelets.

Type below:

___________

Answer:

Explanation:

Question 2.

Write ordered pairs, letting the x-coordinate represent the number of bracelets and the y-coordinate represent the number of charms.

Type below:

___________

Answer:

(1, 8), (2, 16), (3, 24), (4, 32), (5, 40)

Question 3.

Use the ordered pairs to graph the charms and bracelets.

Type below:

___________

Answer:

**The graph shows the number of granola bars that are in various numbers of boxes of Crunch N Go. Use the graph for 4–5.**

Question 4.

Complete the table of equivalent ratios.

Type below:

___________

Answer:

Question 5.

Find the unit rate of granola bars per box.

Type below:

___________

Answer:

10 bars/1 box

**Problem Solving**

Question 6.

Look at the graph for Christie’s Bracelets. How many charms are needed for 7 bracelets?

_____ charms

Answer:

56 charms

Question 7.

Look at the graph for Crunch N Go Granola Bars. Stefan needs to buy 90 granola bars. How many boxes must he buy?

_____ boxes

Answer:

9 boxes

Question 8.

Choose a real-life example of a unit rate. Draw a graph of the unit rate. Then explain how another person could use the graph to find the unit rate.

Type below:

___________

Answer:

Sam prepares 4 bracelets per month. How many bracelets does she prepare in a span of 6 months?

For 1 month, 1 × 4 = 4 bracelets

For 2 months, 2 × 4 = 8 bracelets

For 3 months, 3 × 4 = 12 bracelets

For 4 months, 4 × 4 = 16 bracelets

For 5 months, 5 × 4 = 20 bracelets

### Lesson Check – Page No. 260

Question 1.

A graph shows the distance a car traveled over time. The x-axis represents time in hours, and the y-axis represents distance in miles. The graph contains the point (3, 165). What does this point represent?

Type below:

___________

Answer:

Explanation:

In 3 hours the car traveled 165 miles.

(3,165) is (x,y) so 3 = x and 165 = y, and

3=x=time in hours

165=y= miles…. soooo

In 3 hours the car traveled 165 miles

Question 2.

Maura charges $11 per hour to babysit. She makes a graph comparing the amount she charges (the y-coordinate) to the time she babysits (the x-coordinate). Which ordered pair shown is NOT on the graph?

(4, 44) (11, 1) (1, 11) (11, 12)

Type below:

___________

Answer:

(11, 1)

Explanation:

It is not 11,1 because she charges 11 hours per hour (y coordinate) and x would be time to babysit. so it can’t be 11,1

**Spiral Review**

Question 3.

List 0, –4, and 3 from least to greatest.

Type below:

___________

Answer:

-4, 0, 3

Question 4.

What two numbers can be used in place of the ? to make the statement true?

|?| = \(\frac{8}{9}\)

Type below:

___________

Answer:

–\(\frac{8}{9}\), \(\frac{8}{9}\)

Explanation:

|-\(\frac{8}{9}\)| = \(\frac{8}{9}\)

|\(\frac{8}{9}\)| = \(\frac{8}{9}\)

Question 5.

Morgan plots the point (4, –7) on a coordinate plane. If she reflects the point across the y-axis, what are the coordinates of the reflected point?

Type below:

___________

Answer:

(-4, -7)

Explanation:

Morgan plots the point (4, –7) on a coordinate plane. If she reflects the point across the y-axis, it will be (-4, -7)

Question 6.

Jonathan drove 220 miles in 4 hours. Assuming he drives at the same rate, how far will he travel in 7 hours?

_____ miles

Answer:

385 miles

Explanation:

Jonathan drove 220 miles in 4 hours.

If he travel in 7 hours, (7 × 220)/4 = 385 miles

### Chapter 4 Review/Test – Page No. 261

Question 1.

Kendra has 4 necklaces, 7 bracelets, and 5 rings. Draw a model to show the ratio that compares rings to bracelets

Type below:___________

Answer:

Question 2.

There are 3 girls and 2 boys taking swimming lessons. Write the ratio that compares the girls taking swimming lessons to the total number of students taking swimming lessons.

Type below:

___________

Answer:

3 : 5

Explanation:

There are 3 girls and 2 boys taking swimming lessons.

the total number of students taking swimming lessons = 5

3 : 5

Question 3.

Luis adds 3 strawberries for every 2 blueberries in his fruit smoothie. Draw a model to show the ratio that compares strawberries to blueberries.

Type below:

___________

Answer:

Question 4.

Write the ratio 3 to 10 in two different ways.

Type below:

___________

Answer:

3/10, 3 : 10

Question 5.

Alex takes 3 steps every 5 feet he walks. As Alex continues walking, he takes more steps and walks a longer distance. Complete the table by writing two equivalent ratios.

Type below:

___________

Answer:

Explanation:

Alex takes 3 steps every 5 feet he walks. As Alex continues walking, he takes more steps and walks a longer distance.

3/5 × 2/2 = 6/10

3/5 × 3/3 = 9/15

### Page No. 262

Question 6.

Sam has 3 green apples and 4 red apples. Select the ratios that compare the number of red apples to the total number of apples. Mark all that apply.

Options:

a. 4 to 7

b. 3 to 7

c. 4 : 7

d. 4 : 3

e. \(\frac{3}{7}\)

f. \(\frac{4}{7}\)

Answer:

a. 4 to 7

c. 4 : 7

f. \(\frac{4}{7}\)

Explanation:

Sam has 3 green apples and 4 red apples.

the total number of apples = 3 + 4 = 7

4 : 7

Question 7.

Jeff ran 2 miles in 12 minutes. Ju Chan ran 3 miles in 18 minutes. Did Jeff and Ju Chan run the same number of miles per minute? Complete the tables of equivalent ratios to support your answer.

Type below:

___________

Answer:

Explanation:

2/12 × 2/2 = 4/24

2/12 × 3/3 = 6/39

2/12 × 4/4 = 8/48

3/18 × 2/2 = 6/36

3/18 × 3/3 = 9/24

3/18 × 4/4 = 12/72

Question 8.

Jen bought 2 notebooks for $10. Write the rate as a fraction. Then find the unit rate.

Type below:

___________

Answer:

$10/2

unit rate = $5

Explanation:

Jen bought 2 notebooks for $10.

$10/2 ÷ 2/2 = $5

### Page No. 263

Question 9.

Determine whether each ratio is equivalent to \(\frac{1}{2}, \frac{2}{3}, \text { or } \frac{4}{7}\). Write the ratio in the correct box.

Type below:

___________

Answer:

Explanation:

1/2 × 2/2 = 4/8

7/14 ÷ 2/2 = 1/2

20/35 ÷ 5/5 = 4/7

40/80 ÷ 40/40 = 1/2

8/14 ÷ 2/2 = 4/7

4/6 ÷ 2/2 = 2/3

8/12 ÷ 4/4 = 2/3

Question 10.

Amos bought 5 cantaloupes for $8. How many cantaloupes can he buy for $24? Show your work.

_____ cantaloupes

Answer:

15 cantaloupes

Explanation:

Amos bought 5 cantaloupes for $8.

For $24, ($24 × 5)/$8 = 15

Question 11.

Camille said \(\frac{4}{5}\) is equivalent to \(\frac{24}{30}\). Check her work by making a table of equivalent ratios.

Type below:

___________

Answer:

Question 12.

A box of oat cereal costs $3.90 for 15 ounces. A box of rice cereal costs $3.30 for 11 ounces. Which box of cereal costs less per ounce? Use numbers and words to explain your answer.

Type below:

___________

Answer:

A box of oat cereal costs $3.90 for 15 ounces.

$3.90/15 = $0.26

A box of rice cereal costs $3.30 for 11 ounces.

$3.30/11 = $0.3

$0.26 < $0.3

### Page No. 264

Question 13.

Scotty earns $35 for babysitting for 5 hours. If Scotty charges the same rate, how many hours will it take him to earn $42?

_____ hours

Answer:

6 hours

Explanation:

Scotty earns $35 for babysitting for 5 hours

For $42, (42 × 5)/35 = 6

Question 14.

Use a unit rate to find the unknown value.

Type below:

___________

Answer:

Explanation:

(9 × 42)/14 = 3

Question 15.

Jenna saves $3 for every $13 she earns. Vanessa saves $6 for every $16 she earns. Is Jenna’s ratio of money saved to money earned equivalent to Vanessa’s ratio of money saved to money earned?

Type below:

___________

Answer:

No, 3/13 = 6/26. Vanessa ratio is 6/16

Question 16.

The Hendersons are on their way to a national park. They are traveling at a rate of 40 miles per hour. Use the ordered pairs to graph the distance traveled over time

Type below:

___________

Answer:

### Page No. 265

Question 17.

Abby goes to the pool to swim laps. The graph shows how far Abby swam over time. Use equivalent ratios to find how far Abby swam in 7 minutes

_____ meters

Answer:

350 meters

Explanation:

50/1 × 7/7 = 350/7

Question 18.

Caleb bought 6 packs of pencils for $12.

Part A

How much will he pay for 9 packs of pencils? Use numbers and words to explain your answer

$ _____

Answer:

$18

Explanation:

Caleb bought 6 packs of pencils for $12.

6/12 = 1/2 × 9/9 = 9/18

So, $18 is the answer

Question 18.

Part B

Describe how to use a bar model to solve the problem.

Type below:

___________

Answer:

Take the known ratio and identify the unknown value using known ratio.

### Page No. 266

Question 19.

A rabbit runs 35 miles per hour. Select the animals who run at a faster unit rate per hour than the rabbit. Mark all that apply.

Options:

a. Reindeer: 100 miles in 2 hours

b. Ostrich: 80 miles in 2 hours

c. Zebra: 90 miles in 3 hours

d. Squirrel: 36 miles in 3 hours

Answer:

a. Reindeer: 100 miles in 2 hours

b. Ostrich: 80 miles in 2 hours

Explanation:

A rabbit runs 35 miles per hour.

35/1

100/2 = 50/1

80/2 = 40/1

90/3 = 30/1

36/3 = 12/1

Question 20.

Water is filling a bathtub at a rate of 3 gallons per minute.

Part A

Complete the table of equivalent ratios for the first five minutes of the bathtub filling up.

Type below:

___________

Answer:

Question 20.

Part B

Emily said there will be 36 gallons of water in the bathtub after 12 minutes. Explain how Emily could have found her answer

Type below:

___________

Answer:

Emily said there will be 36 gallons of water in the bathtub after 12 minutes.

36/12 ÷ 12/12 = 3/1

She can find the answer using the unit rate.

### Conclusion:

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