SSC Delhi Police Constable 2025 Mock Test Series (New) Quantitative Aptitude Time and Work Pipe and Cistern
P can fill a tank in 5 hours. Q can fill the same tank in 15 hours. R can empty the same tank in 7.5 hours. How much time will all the three take together to fill the same tank?
1
2.5 hours
2
12.5 hours
3
7.5 hours
4
10 hours