Pipe P can fill a tank in 38 hours. Pipe Q alone can fill it in 19 ho – McqOptions

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1.	Pipe P can fill a tank in 38 hours. Pipe Q alone can fill it in 19 hours. Pipe R can empty the full tank in 133 hours. If all the pipes are opened together, how much time will be needed to make the tank full?
A.	28 hours
B.	95 hours
C.	19 hours
D.	14 hours
Answer» E.

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