Pipes A and B can fill an empty tank in 10 hours and 15 hours respecti – InterviewSolution

1.	Pipes A and B can fill an empty tank in 10 hours and 15 hours respectively. If both are opened together in the empty tank, how much time will they take to fill it completely?
Answer» Pipes A and B can fill an empty tank in $10$ hours and $15$ hours respectively. If both are opened together in the empty tank, how much time will they take to fill it completely?

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