Question 813366: Julie and Eric row their boat (at a constant speed) 32 miles downstream for 4 hours, helped by the current. Rowing at the same rate, the trip back against the current takes 8 hours. Find the rate of the current.
Answer by TimothyLamb(4379)   (Show Source):
You can put this solution on YOUR website! s = d / t
d = s * t
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b + w = 32/4 = 8 mph
b - w = 32/8 = 4 mph
b - w = 4 mph
b = 4 + w
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b + w = 8
(4 + w) + w = 8
4 + 2w = 8
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w = 2 mph
b = 6 mph
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Answer:
the water current is moving at 4 mph
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