A pump can fill a trunk with water in 2 hours. Because of a leak, it took 2 and 1/3 hours to fill the tank. The leak can drain all water of the tank in.
A. 4 hours
B. 7 hours
C. 14 hours
D. 18 hours
E. None of these
সঠিক উত্তরঃ
C.
14 hours
Explanation:
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