state gov Bihar Police Constable (सिपाही) Mock Test Series 2025 Quantitative Aptitude Time and Work Pipe and Cistern
Two pipes 'L' and 'K' together fill a tank in 4 hours. Pipe K alone fills it in 5 hours. In how many hours will pipe L fill this tank alone?
1
20 hours
2
12 hours
3
8 hours
4
15 hours