"Two taps A and B can fill a tank in 5 hours and 20 hours respectively. It both the
Channel: Doubtnut
Date: 2020-04-05

"Two taps A and B can fill a tank in 5 hours and 20
 hours respectively. It both the taps are open 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?
 
`4 1/2h r s`
b. `9\ h r s`
c. `18\ h r s`
d. `36\ h r s`"