Janine has started an exercise program. As part of her exercise program, she will walk along trails. Janine walks at an average speed of 1 mile in 15 minutes.

Question

What is Janine’s average speed in miles per hour? Show or explain how you got your answer.

Janine plans to walk along a trail that is 5.6 miles long.

If Janine walks at her average speed, how much time will it take her to walk the 5.6 miles? Show or explain how you got your answer.

Janine’s goal is to burn 750 calories by walking. A woman of her weight walking at her average speed burns 236 calories in one hour.

How many calories will Janine burn walking the 5.6 miles at her average speed? Show or explain how you got your answer.

How much additional time will Janine have to walk at her average speed to burn a total of 750 calories? Show or explain how you got your answer.

Answer 1

Which of these questions don't you understand?

Answer 2

i don't really understand the first two

Answer 3

1. Let's use a proportion.

1/15 = x/60
Cross multiply and solve for x.

2. Use the mph from the first question and multiply it by 5.6.

Answer 4

Sorry -- 2. divide 5.6 by the mph.