Question

Fred's workout consisted of a 5-minute walk (2 mph) to warm up, followed by a 20-minute run (5 mph), and then a 10-

minute cool down walk (2 mph). How many calories did he burn?
A : 560
B : 30
C : 245
D : 16

Answer 1

The correct answer is 245 calories

Step-by-step explanation:

To find the total calories Fred burned, it is necessary to calculate the calories burned in each activity and then add all the calories.

Warm-up

For the warm-up Fred walked at 2 miles per hour and at this speed he burns 3 calories per minute as shown in the chart. To find the calories burned, multiply the time by the calories this activity burns per minute.

5 minutes x 3 calories per minute = 15 calories

Main activity

After the warm-up, Fred runs at 5 miles per hour for 20 minutes and the chart indicates this activity burns 10 calories per minute.

20 minutex x 10 calores per minute = 200 calories

Cooldown

Finally, Fren walked at 2 miles per hour for 10 minutes and the chart shows this activity burns 3 calories per minute.

10 minutes x 3 calores per minute = 30 calories

Total calories

Now, lets add all the results

15 caloreis + 200 calories + 30 calories = 245 calories