A pump can fill a tank with water in 2 hours. Because of a leak, it took 2(1/3)hours to fill the tank. The leak can drain all water of the tank in:

A 4(1/3) hrs

B 7 hrs

C 8 hrs

D 14 hrs

Correct Answer: Option D

Work done by the leak in 1 hour = (1/2 - 3/7) = 1/14

Leak will empty the tank in 14 hrs.