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1. |
A tap can fill a tank in 16 minutes and another can empty it in 8 minutes. If the tank is already half full and both the taps are opened together, the tank will be ? |
A. | Filled in 12 min. |
B. | Emptied in 12 min. |
C. | Filled in 8 min. |
D. | Emptied in 8 min. |
Answer» E. | |