railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Time and Work Pipe and Cistern
Pipe A is a filling pipe while B and C are emptying pipes. Pipe A alone can fill the tank in 10 hours and pipe B alone can empty two-third part of the tank in 20 hours. If all the pipes are opened together, the tank is completely filled in 40 hours. In how many hours can C alone empty two-third part of the tank?
1
24
2
12
3
16
4
20