Question

Levi runs cross country. He runs 5 miles in 45 minutes. He runs 20 miles in 180 minutes. If he keeps the same pace, how long will it take him to run 12 miles?

Answer 1

It will take 108 minutes to Levi to run 12 miles

Explanation:

Hi

Formulas

(1)
`velocity=(distance)/(time)` and (2)
`time=(distance)/(velocity)`

Using (1) we can conclude that
`velocity=(5miles)/(45minutes)=(1)/(9)mil/min` in the first case, and for the second
`velocity=(20miles)/(180minutes)=(1)/(9)mil/min`, is the same.

Finally using (2)
`time=(12 mil)/((1)/(9)mil/min)=108min`, is the time that will take to Levi to run 12 miles.