# McGraw Hill Math Grade 8 Lesson 2.2 Answer Key Problem Solving

Practice the questions of McGraw Hill Math Grade 8 Answer Key PDF Lesson 2.2 Problem SolvingĀ to secure good marks & knowledge in the exams.

Exercises Solve

Question 1.
Don volunteers 18 hours a week at the local hospital. If he volunteered 45 weeks last year, how many hours did he spend volunteering?
810 hours,

Explanation:
As Don volunteers 18 hours a week at the local hospital. If he volunteered 45 weeks last year, Number of many hours did he spend volunteering are 18 hours X 45 = 810 hours.

Question 2.
Milos can ride his bicycle an average of 81 miles a day. If he wants to visit his cousin 324 miles away, how many days will it take for him to ride there?
4 days,

Explanation:
As Milos can ride his bicycle an average of 81 miles a day. If he wants to visit his cousin 324 miles away, Number of days will it take for him to ride there are 324 divided by 81 is
81)324(4
Ā  Ā  324
0Ā  Ā  Ā ,
Therefore 4 days.

Question 3.
Lorraine’s cell phone plan allows for 1,200 minutes of free usage every month. During the month of March (March has 31 days), how many minutes a day can Lorraine talk without exceeding her monthly limit?
38 minutes 22 seconds,

Explanation:
Given Lorraine’s cell phone plan allows for 1,200 minutes of free usage every month. During the month of March (March has 31 days), Number of minutes a day can Lorraine talk without exceeding her monthly limit 1,200 minutes divided by 31 is
31)1,200(38
Ā  Ā  Ā 114
Ā  Ā  Ā 060
Ā  Ā  Ā  38
22
therefore 38 minutes 22 seconds.

Question 4.
Basil launched his website this year. During the first three months of operation, his site recorded 835,884 hits. If he maintains that same monthly average, how many hits should he expect by the end of the fifteenth month?
4,179,420 hits,

Explanation:
As Basil launched his website this year. During the first three months of operation, his site recorded 835,884 hits. If he maintains that same monthly average, Number of hits should he expect by the end of the fifteenth month is 15 divided by 3 is 5 So hits are
1,2,4,4,2
835,884
Ā  Ā  Ā  Ā X 5
4,179,420.

Question 5.
Camille is counting the number of bricks she needs to build a retaining wall for her herb garden. She calculates that she will need 485 bricks to complete the project. If the bricks come in stacks of 24, how many stacks will she need to complete the project?
20 stacks and 5 bricks,

Explanation:
As Camille is counting the number of bricks she needs to build a retaining wall for her herb garden. She calculates that she will need 485 bricks to complete the project. If the bricks come in stacks of 24, Number of many stacks will she need to complete the project is
24)485(20
Ā  Ā  Ā  480
Ā  Ā  Ā  Ā  Ā  5
So 20 stacks and 5 bricks.

Question 6.
Iris volunteered to register voters for an upcoming election. She was able to sign up 374 new voters in just 1 voting precinct. If there are 11 precincts in the town, and Iris expects to have the same amount of success in each precinct, how many new voters will she sign up before the election?