A pipe can fill a tank in 16 hours. Due to a leak in the bottom,it is filled in 24 hours. If the tank is full, how much time will the leak take to empty it ?
Options:
(A) 12 hrs
(B) 24 hrs
(C) 36 hrs
(D) 48 hrs
(E) 42 hrs OK. Let's think. Some random thoughts first:
Time taken by leak to empty tank = 1/(1/16-1/24) = 48 hrs The answer: (D).