Pipes A and B fill a tank in 5 and 6 hours respectively. Pipe C empti – McqOptions

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1.	Pipes A and B fill a tank in 5 and 6 hours respectively. Pipe C empties the tank in 12 hours, if you open all the three pipes together this tank will be filled in?
A.	3 9/17 hours
B.	4.5 hours
C.	1.25 hours
D.	4 7/17 hours
Answer» B. 4.5 hours

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