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-From a point on a straight road, two cars are driven in opposite directions, one at 55 miles per hour and the other at 51 miles per hour. In how many hours will they be 530 miles apart?
A) 6 hours
B) 5 hours
C) 4 hours
D) Not enough information

Question

Quizplus · Accepted Answer

Since the cars are going in opposite directions their distance apart will increase at a rate of 55 mph + 51 mph = 106 mph. To travel 530 miles at a rate of 106 mph it will take 530/106 = 5 hours.

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