engineering recuitment FCI JE 2022 Mock Test for CE/ME/EE (Phase I & II) Quantitative Aptitude Time and Work Pipe and Cistern
Pipe P fills a tank and pipe Q empties a tank in 18 hours and 12 hours respectively. Find the time taken to empty the filled tank when both the pipes work simultaneously.
1
27 hours
2
30 hours
3
33 hours
4
36 hours
5
39 hours