SSC Delhi Police Head Constable (Ministerial) 2025 Mock Test (New) Quantitative Aptitude Time and Work Pipe and Cistern
Two pipes P and Q can fill a cistern in 8 minutes and 22 minutes. If both are opened together and at the end of 4 minutes, the first is closed. How much longer will the cistern take to fill?
1
5 minutes
2
10 minutes
3
6 minutes
4
7 minutes