SSC NTA Delhi University Non-Teaching 2021 Mock Test Quantitative Aptitude Time and Work Pipe and Cistern
A tank can be filled by two taps A and B in 5 hours and 15 hours respectively. Tap C can empty the tank in 5 hours. If all the three taps are opened simultaneously, approximately how long will it take to fill the tank completely?
1
24 hours
2
15 hours
3
20 hours
4
12 hours