SSC Delhi Police Head Constable (Ministerial) 2025 Mock Test (New) Quantitative Aptitude Time and Work Pipe and Cistern
Three taps A, B and C can fill a tank in 180, 20 and 90 minutes respectively. If all the taps are opened together, then in how many minutes will the tank be filled?
1
15
2
25
3
30
4
35