"Two pipes A and B can fill a tank in 20 and 30 hours respectively. Both the pipes
Channel: Doubtnut
Date: 2020-04-05

"Two pipes A and B can fill a tank in 20 and 30
 hours respectively. Both the pipes are opened to fill the tank but when the
 tank is one-third full, a leak develops in the tank through which one-third
 water supplied by both the pipes goes out. The total time taken to fill the
 tank is
`12\ hou r s`
b. `14\ hou r s`
c. `16\ hou r s`
d. `18\ hou r s`"