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1. |
A pipe can fill a sump with water in 2 hours. Because of a leak, it took 2 2/3 hrs to fill the sump. The leak can drain all the water of the sump in |
A. | 8 hrs |
B. | 15 hrs |
C. | 6 hrs |
D. | 11 hrs |
Answer» B. 15 hrs | |