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A pipe can fill a tank in 'x hours and a...

A pipe can fill a tank in 'x hours and another pipe can empty it in 'y' `(y gt x)` hours. If both the pipes are open, in how many hours will the tank be filled ?

A

`(xy )/( y-x)` hours

B

x-y hours

C

y-x hours

D

`(xy )/( x-y) ` hours

Text Solution

Verified by Experts

The correct Answer is:
A
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