2 pipes P and Q can fill a tank in 18 hours and 22.5 hours respectivel – InterviewSolution

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1.	2 pipes P and Q can fill a tank in 18 hours and 22.5 hours respectively. If both are opened simultaneously, how much time will be taken to fill the tank?
Answer» 2 pipes P and Q can fill a tank in 18 hours and 22.5 hours respectively. If both are opened simultaneously, how much time will be taken to fill the tank?

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