railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Time and Work Pipe and Cistern
Pipe A can fill a tank in 10 hours and pipe B can fill the same tank in 12 hours. Pipe C can empty the same full tank in 6 hours. If all the pipes are opened together, then what portion of the tank will be filled after 12 hours?
1
3/4
2
1/5
3
1/4
4
4/5