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A pipe can fill the tank in 10 minutes and another pipe can empty it in 12 minutes. If both the pipes are opened the time in which the tank is filled

A45 minutes.

B30 minutes.

C25 minutes.

D60 minutes.

Answer:

D. 60 minutes.

Read Explanation:

xy/(y-x)=(10 x 12)/(12-10) = 120/2 = 60 minutes


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