Two pipes A and B can fill a tank in 2 hours and 75 minutes respectively. There is also an outlet C. If all the three pipes are opened together then the tank is full in 50 minutes. How much time will be taken by C alone to empty the full tank?

Two pipes A and B can fill a tank in 2 hours and 75 minutes respective

1.	Two pipes A and B can fill a tank in 2 hours and 75 minutes respectively. There is also an outlet C. If all the three pipes are opened together then the tank is full in 50 minutes. How much time will be taken by C alone to empty the full tank?
A.	90 minutes
B.	10 hours
C.	150 minutes
D.	120 minutes
Answer» C. 150 minutes

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Two pipes A and B can fill a tank in 2 hours and 75 minutes respectively. There is also an outlet C. If all the three pipes are opened together then the tank is full in 50 minutes. How much time will be taken by C alone to empty the full tank?

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