Question

Christine runs 7 miles in 60 minutes. at the same rate, how many miles would she run in 24 minutes?

Answer 1

Let x = the unknown amount of miles she would run. We are going to set up a proportion.

$\frac{7 miles}{60 min} = \frac{x miles}{24 min}$

Now we are going to cross-multiply and solve for x. 

60x = 7(24)
60x = 168
x = 168 / 60
x = 2.8

Christine runs 2.8 miles in 24 minutes.