state gov UP Police SI (दरोगा) Mock Test Series 2025 Quantitative Aptitude Time and Work Pipe and Cistern
A pipe can fill a cistern in 6 h. Due to some leakage at the bottom the tank gets filled in 7 h. In what time can a completely filled tank be emptied from the leakage point?
1
42 h
2
40 h
3
38 h
4
46 h