Pipe A can fill a tank in 4 hours and pipe B can fill the same tank in 3 hours. Pipe C can empty the same full tank in 2 hours. If all the pipes are opened together, then what portion of the tank will be filled after 6 hours?
1
2/9
2
1/2
3
1/3
4
2/3
Pipe A can fill a tank in 4 hours and pipe B can fill the same tank in 3 hours. Pipe C can empty the same full tank in 2 hours. If all the pipes are opened together, then what portion of the tank will be filled after 6 hours?