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1. |
A cistern can be filled by two pipes. A and B in 12 minutes and 14 minutes respectively and can be emptied by a third pipe C in 8 minutes. If all the taps be turned on at the same moment, what part of |
A. | 5/24 |
B. | 19/24 |
C. | 7/24 |
D. | 17/24 |
Answer» C. 7/24 | |