SSC Delhi Police Head Constable (Ministerial) 2025 Mock Test (New) Quantitative Aptitude Time and Work Pipe and Cistern
A tap can fill a cistern in 10 minutes and another tap can empty it in 12 minutes. If both the taps are open, the time (in hours) taken to fill the tank will be:
1
1.5 hours
2
2.5 hours
3
2 hours
4
1 hour