SOLUTION: A boy rows 6 miles downstream in 64 minutes. He rows back at the same rate in 180 minutes. Find the rate of the stream and the boy's rate in still water.
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Question 184448: A boy rows 6 miles downstream in 64 minutes. He rows back at the same rate in 180 minutes. Find the rate of the stream and the boy's rate in still water. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! A boy rows 6 miles downstream in 64 minutes. He rows back at the same rate in 180 minutes. Find the rate of the stream and the boy's rate in still water.
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Downstream DATA:
time = 64 minutes ; distance = 6 miles ; rate = d/t = 6/64 miles per minute
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Upstream DATA:
time = 180 minutes ; distance = 6 miles ; rate = d/t = 6/108 miles per minute
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EQUATIONS:
b + c = 6/64
b - c = 6/108
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2b = 6/64 + 6/108
b = 3/64 + 3/108
b = 0.07465 miles per minute
b = .4.48 miles per hour (speed of the boy in still water)
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Cheers,
Stan H.
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