Two pipes A and B can fill a water tank in 20 and N 24 minutes respect – McqOptions

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1.	Two pipes A and B can fill a water tank in 20 and N 24 minutes respectively and a third pipe C can empty at the rate of 3 gallons per minute. If A, B and C opened together fill the tank in 15 minutes, the capacity in gallons) of the tank is
A.	180
B.	150
C.	120
D.	60
Answer» D. 60

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