railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Time and Work Pipe and Cistern
Two taps T1 and T2 can fill a tank in 2 hours and 3 hours respectively. If an outlet tap T3 is opened, then all three can together fill the tank in 6 hours. How much time will tap T3 take to empty the completely filled tank?
1
3 hours
2
3/2 hours
3
4 hours
4
2 hours