Two pipes A and B can separately fill a cistern in 60 min and 75 min pipe at the bottom of the cistern to empty it. If all the three pipes are simultaneously opened, the cistern is full in 50 min. In how much time can the third pipe alone empty the cistern ?

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Accepted Answer

100 min

Two pipes A and B can separately fill a cistern in 60 min and 75 min pipe at the bottom of the cistern to empty it. If all the three pipes are simultaneously opened, the cistern is full in 50 min. In how much time can the third pipe alone empty the cistern ?

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