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1. |
Two pipes A and B can separately fill a tank in 12 and 15 minutes respectively. A third pipe C can drain off 45 liters of water per minute. If all the pipes are opened, the tank can be filled in 15 minutes. What is the capacity of the tank? |
A. | 480 liters |
B. | 540 liters |
C. | 600 liters |
D. | 675 liters |
Answer» C. 600 liters | |