SSC SSC Selection Post (Phase 13) 2025 Mock Test Quantitative Aptitude Time and Work Pipe and Cistern
A pipe can fill a tank in 8 hours. Another pipe can empty the filled tank in 72 hours. If both the pipes are opened simultaneously, then the time (in hours) in which the tank will be one-third filled, is:
1
6
2
9
3
12
4
3