SOLUTION: Tina can run 12 miles in the same time it takes her to bicycle 72 miles. If her bicycling rate is 20 mph faster than her running rate, find each rate.

Question 262577: Tina can run 12 miles in the same time it takes her to bicycle 72 miles. If her bicycling rate is 20 mph faster than her running rate, find each rate.
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
Tina can run 12 miles in the same time it takes her to bicycle 72 miles. If her bicycling rate is 20 mph faster than her running rate, find each rate.
Let the running rate be x
Her cycling rate = x+20
12/x= 72/(x+20)
12(x+20) = 72x
12x+240=72x
60x=240
X=4 mph running rate
24 mph will be the bicycling rate.
mananth@hotmail.com

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