Let x = the unknown amount of miles she would run. We are going to set up a proportion.
[tex] \frac{7 miles}{60 min} = \frac{x miles}{24 min} [/tex]
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.
