Question

O. Math 153A
15. Two taps A and B can fill a tank in 5 hours and 20 hours respectively. If
both the taps are opened then due to a leakage it took 30 minutes more
to fill the tank. If the tank is full, how long will it take for the leakage
alone to empty the tank ?​

Answer 1

Answer:

its ex 28 in ncert.....