engineering recuitment OSSC Soil Conservation Extension Worker - CHSL Mock Test Series 2024 Quantitative Aptitude Time and Work Pipe and Cistern
A pipe can fill a cistern in 20 minutes whereas the cistern when full can be emptied by a leak in 28 minutes. When both are opened, The time taken to fill the cistern is:
1
80 min
2
70 min
3
60 min
4
48 min