SSC Delhi Police Head Constable (Ministerial) 2025 Mock Test (New) Quantitative Aptitude Time and Work Pipe and Cistern
If A fills a tank in 30 min and B empties it in 60 minutes, how long will it take to fill the tank if both A and B are operated together?
1
15 min
2
55 min
3
83 min
4
60 min