A cistern has two pipes. One can fill it with water in 8 h and the other can empty it in 5 h. In how many hours will the cistern be emptied if both the pipes are opened together when 3/4 of the cistern is already full of water ?

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Accepted Answer

10 h

A cistern has two pipes. One can fill it with water in 8 h and the other can empty it in 5 h. In how many hours will the cistern be emptied if both the pipes are opened together when 3/4 of the cistern is already full of water ?

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