Two pipes A and B can separately fill a cistern in 10 and 15 minutes respectively. A person opens both the pipes together when the cistern should have been was full he finds the waste pipe open. He then closes the waste pipe and in another 3 minutes the cistern was full. In what time can the waste pipe empty the cistern when fill

Comments and Answers (2)

Naveen

Naveen

need a solution

Lalit

Lalit

What is the correct solution?

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