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A man can row at a speed of x km/hr in s...

A man can row at a speed of x km/hr in still water. If in a stream which is flowing at a speed of y km/hr it takes him z hours to row to a place and back, then what is the distance between the two places ?

A

`(z(x^(2) - y^(2)))/(2y)`

B

`(z(x^(2) - y^(2)))/(2x)`

C

`((x^(2) - y^(2)))/(2zx)`

D

`(z(x^(2) - y^(2)))/(x)`

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