Question

a pipe can fill a tank in 3 hrs .due to a leakage in the tank it takes 3.5 hrs to fill the same tank. then how many hours will the leakage can empty the tank.

Answer 1

Part of tank filled by pipe A in 1hr = 13

and let the part of tank supplied by another pipe 1 in 1 hr = 1x

Now, according to question-

13−1x=13.5

1x=13−13.5

1x=13−1035

1x=35−3035×3

x = 21hr

Hence leakage will take 21 hr to empty the tank