Pipes A and B can fill an empty tank in 6 and 8 hours respectively, while pipe C can empty the full tank in 10 hours. If all three pipes are opened together, then the tank will get filled in:

Pipes A and B can fill an empty tank in 6 and 8 hours respectively, wh

1.	Pipes A and B can fill an empty tank in 6 and 8 hours respectively, while pipe C can empty the full tank in 10 hours. If all three pipes are opened together, then the tank will get filled in:
A.	\(4\frac{4}{{23}}\;hrs\)
B.	\(5\frac{5}{{23}}\;hrs\)
C.	\(7\frac{1}{2}\;hrs\)
D.	\(6\frac{1}{5}\;hrs\)
Answer» C. \(7\frac{1}{2}\;hrs\)

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Pipes A and B can fill an empty tank in 6 and 8 hours respectively, while pipe C can empty the full tank in 10 hours. If all three pipes are opened together, then the tank will get filled in:

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