Two pipes A and B can fill a tank in 100 minutes and 120 minutes respe – McqOptions

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1.	Two pipes A and B can fill a tank in 100 minutes and 120 minutes respectively. Pipe C can alone empty the same tank in 200 minutes. If all three pipes are opened together, then in how many minutes will the tank be filled?
A.	100
B.	80
C.	75
D.	120
Answer» D. 120

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