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1. |
Pipes A and B can fill a tank in 43.2 minutes and 108 minutes, respectively. Pipe C can empty it at 3 litres/minute. When all the three pipes are opened together, they fill the tank in 54 minutes. The capacity (in litres) of the tank is: |
A. | 160 |
B. | 216 |
C. | 200 |
D. | 180 |
Answer» C. 200 | |