A can fill in 5min and B in 20min.if both taps are opened then due to a leakage it took 30min more to fill tank.if tank is full,how long will it take for the leakage alone to empty the tank?

Answer 1

A&B together take 1/(1/5 + 1/20) = 4 minutes to fill the tank.

So, if the leak takes x minutes to empty the tank,

1/4 - 1/x = 1/(30+4)
x = 68/15 = 4 8/15 minutes

Answer 2

sir answer 36 hr. but i dont know how?

Answer 3

Hmmm. I'm not sure I agree. Since A&B can fill the tank so fast, and it takes about 9 times as long to fill it with the leak, the leak must be pretty fast in relation to the fill speeds.

You sure that 5 minutes is right?