math

A man rows to a place 48 km distance and back in 14 hours.He find that he can row 4km with the stream in the same time as 3 km against the stream.what is the rate of the stream?

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  1. if his rowing speed is x and the stream's speed is y, then we have

    4/(x+y) = 3/(x-y)
    48/(x+y) + 48/(x-y) = 14
    x=7 and y=1

    check:
    x-y=6
    x+y=8

    It is clear these values fit the conditions.

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    posted by Steve
  2. very helpful.thanks.

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    posted by sangita

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