Pipes A and B can fill a tank in one hour and two hours respectively while pipe C can empty the filled the tank in one hour and fifteen minutes. A and C are turned on together at 9 a.m. after 2 hours, only A is closed and B is turned on. When will the tank be emptied?

Pipes A and B can fill a tank in one hour and two hours respectively w

1.	Pipes A and B can fill a tank in one hour and two hours respectively while pipe C can empty the filled the tank in one hour and fifteen minutes. A and C are turned on together at 9 a.m. after 2 hours, only A is closed and B is turned on. When will the tank be emptied?
A.	12 : 10 p.m.
B.	10 : 30 a.m.
C.	12 : 20 p.m.
D.	11 : 30 a.m.
Answer» D. 11 : 30 a.m.

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Pipes A and B can fill a tank in one hour and two hours respectively while pipe C can empty the filled the tank in one hour and fifteen minutes. A and C are turned on together at 9 a.m. after 2 hours, only A is closed and B is turned on. When will the tank be emptied?

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