Answer:
The person must walk 36.36 minutes to use at least 240 calories.
Step-by-step explanation:
Given:
A 150 pound person uses 6.6 calories per minute when walking at a speed of 4 mph.
Now, to find the time the person walk at this speed to use at least 240 calories.
As, given calories used per minute = 6.6.
So, to solve we use unitary method:
If 6.6 calories used in = 1 minute.
So, 1 calorie used in = [tex]\frac{1}{6.6}[/tex]
Thus, 240 calorie used in = [tex]\frac{1}{6.6} \times 240[/tex]
= [tex]\frac{1}{6.6} \times 240[/tex]
= [tex]\frac{240}{6.6}[/tex]
= [tex]36.36\ minutes.[/tex]
Therefore, the person must walk 36.36 minutes to use at least 240 calories.
