Two pipes A and B can alone fill a tank in 40 minutes and 60 minutes r – McqOptions

MCQOPTIONS

1.	Two pipes A and B can alone fill a tank in 40 minutes and 60 minutes respectively. Pipe C can alone empty the same tank in 120 minutes. If all three pipesare opened together, then in how many minutes will the tank be filled?
A.	30
B.	50
C.	75
D.	90
Answer» B. 50

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