engineering recuitment FCI JE 2022 Mock Test for CE/ME/EE (Phase I & II) Quantitative Aptitude Time and Work Pipe and Cistern
A and B can fill a tank in 30 and 40 hours while C can drain the tank in 60 hours. All three starts filling and after 20 hours A is closed. Find the total time (in hours) taken to fill the tank.
1
35
2
30
3
40
4
50
5
45