A pipe P can fill an empty tank in 11 minutes and pipe Q can empty the same full tank in 33 minutes. How much time it will take for both the pipe together to fill it 2/3 part of the tank?
1
12 minutes
2
13 minutes
3
14 minutes
4
11 minutes
A pipe P can fill an empty tank in 11 minutes and pipe Q can empty the same full tank in 33 minutes. How much time it will take for both the pipe together to fill it 2/3 part of the tank?