state gov DSSSB Warder, Assistant Superintendent, Matron Mock Test 2024 Quantitative Aptitude Time and Work Pipe and Cistern
Three taps A, B and C can fill a tank in 20, 45 and 36 hours respectively. If all the taps are opened together, then in how many hours will the tank be filled?
1
6
2
10
3
12
4
15