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1. |
A tank is normally filled in 8 hours but takes 2 hours longer to fill because of a leak at the bottom. If the tank is full and due to leakage alone, the tank will get empty in ______ hours (Assume no further filling happens) |
A. | 20 |
B. | 40 |
C. | 30 |
D. | 50 |
Answer» C. 30 | |