SOLUTION: Two cars leave town at the same time going in the same direction on the same road. One travels 30 mi/h and the other travels 46mi/h. In how many hours will they be 72 miles apart

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: Two cars leave town at the same time going in the same direction on the same road. One travels 30 mi/h and the other travels 46mi/h. In how many hours will they be 72 miles apart      Log On

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Question 549443: Two cars leave town at the same time going in the same direction on the same road. One travels 30 mi/h and the other travels 46mi/h. In how many hours will they be 72 miles apart
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
Same direction
so subtract speeds to get effective speed
46-30=16 km/h
every hour they will be separated by 16 km
distance = 72
time = 72/16
=4.5 hours