Pipes A and B can fill a tank in 5 and 6 hours respectively. Pipe C can empty it in 12 hours. If all the pipes are opened together, then the tank will be filled in:

Pipes A and B can fill a tank in 5 and 6 hours respectively. Pipe C can empty it in 12 hours. If all the pipes are opened together, then the tank will be filled in:

A 1(13/17)

B 2(8/11)

C 3(9/17)

D 4(1/2)

Solution

Correct Answer: Option C