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OpenStudy (anonymous):
Two cars leave the same point at the same time traveling in opposite directions. One car travels west at 70 miles per hour and the other travels east at 20 miles per hour. In how many hours will they be 250 miles apart?
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OpenStudy (anonymous):
The distance between them would be given by 70x + 20x (where x is the number of hours passed). You want to find out when this sum will equal 250. Algebra time!
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