SOLUTION: two cars leave chicago at the same time traveling opposite directions. one travels at an average speed of 79mph and the other 80mph. in how many hours will they be 477 miles apart?

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Question 674685: two cars leave chicago at the same time traveling opposite directions. one travels at an average speed of 79mph and the other 80mph. in how many hours will they be 477 miles apart?
Answer by Edwin McCravy(20059) About Me  (Show Source):
You can put this solution on YOUR website!
They are separating at a rate of 79+80 = 159 mph.

Since TIME=DISTANCE%2FRATE, TIME=477%2F159 = 3 hours.

Edwin