Question

A​ 150-pound person uses 6.7 6.7 calories per minute when walking at a speed of 4 mph. How long must a person walk at this speed to use at least 170 170 ​calories? A person must walk for at least nothing minutes in order to use at least 170 170 calories. ​(Round up to the nearest​ minute.) Enter your answer in the answer box.

Answer 1

Answer:

A person must walk for 25.37 minutes in order to use 170 calories.

Step-by-step explanation:

A​ 150-pound person uses 6.7 calories per minute when walking at a speed of 4 mph.

Let the person takes x minutes to walk at this speed.

So, the time needed to burn 170 calories is given by:

$6.7x=170$

Solving for x, we get;

x = 25.37 minutes

Hence, A person must walk for 25.37 minutes in order to use 170 calories.