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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 three pipes are opened together, then the tank will be filled in : | |
A. | 1(13/17)hours [Wrong Answer] |
B. | 2(8/11)hours [Wrong Answer] |
C. | 3(9/17)hours [Correct Answer] |
D. | 4(1/2)hours [Wrong Answer] |