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1. |
A tap can completely fill a tank in 16 hours. However, there is an unnoticed leakage at the bottom which makes the tank fill up in 24 hours. How long will the leakage take to completely empty a full tank? |
A. | 36 hours |
B. | 42 hours |
C. | 44 hours |
D. | 48 hours |
Answer» E. | |