Three taps P, Q and R together can completely fill a tank in 40 minute – McqOptions

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1.	Three taps P, Q and R together can completely fill a tank in 40 minutes. Q and R together can fill the same tank in 80 minutes. In how much time (in minutes) P alone can fill the tank?
A.	40
B.	60
C.	80
D.	120
Answer» D. 120

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