Discussion
A pump can fill a tank with water in 2 hours. Because of a leak, it took 2 hours to fill the tank. The leak can drain all the water of the tank in:
- A.
- B.7 hours
- C.8 hours
- D.14 hours
Answer: D
Work done by the leak in 1 hour = (1/2 - 3/7) = 1/4
Leak will empty the tank in 14 hrs.
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