SOLUTION: Two automobiles start at the same time at the same place and travel in opposite directions. One travels at the rate of 45 km/h and the other at the rate of 40 km/h. In how many ho
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Question 869679: Two automobiles start at the same time at the same place and travel in opposite directions. One travels at the rate of 45 km/h and the other at the rate of 40 km/h. In how many hours will they be 255 km apart. Answer by LinnW(1048) (Show Source):
You can put this solution on YOUR website! They are moving away from each other at the combined rate of (45+40)km/h or
85km/h
Since distance = rate * time ,
255 = 85 * time
divide each side by 85
255/85 = time
3 = time in hours
