Question

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?

Answer 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.

Answer 2

very helpful.thanks.