Question

Jenny walked 2.5 miles in 50 minutes. At this rate, how many minutes did it take her to walk 1 mile.

Answer 1

This is a proportion problem. 2.5 miles is to 50 minutes as 1 mile is to x.

x= # minutes to walk 1 mile

2.5 miles/50 min= 1 mile/ x

cross multiply
(2.5 * x) = (50 * 1)
2.5x=50

divide both sides by 2.5
20= x

She can walk 1 mile in 20 minutes so B) 20m is the answer.

Hope this helps! :)

Answer 2

Find the unit rate for miles by dividing the time by the miles.

50 / 2.5 = 20

So it takes 20 minutes for her to walk 1 mile.