SOLUTION: Two mopeds leave town at the same time in opposite directions. One travels 25 kilometers per hour and the other one travels at 45 kilometers per hour. In how many hours will they b

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Question 606073: Two mopeds leave town at the same time in opposite directions. One travels 25 kilometers per hour and the other one travels at 45 kilometers per hour. In how many hours will they be 210 miles apart?
Found 2 solutions by nerdybill, stanbon:
Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
Two mopeds leave town at the same time in opposite directions. One travels 25 kilometers per hour and the other one travels at 45 kilometers per hour. In how many hours will they be 210 miles apart?
.
Apply the "distance formula" of d=rt:
.
Let x = time (hours) driving
then
25x + 45x = 210
70x = 210
x = 210/70
x = 3 hours

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Is it 210 miles or 210 kilometers?
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Cheers,
Stan H.