engineering recuitment PGCIL Junior Technician Trainee (Electrician) Mock Test 2023 Quantitative Aptitude Time and Work Pipe and Cistern
Pipe A can fill a tank in 12 minutes; pipe B can fill it in 18 minutes, while pipe C can empty the full tank in 36 minutes. If all the pipes are opened simultaneously, how much time will it take to fill the empty tank completely?
1
7 minutes 30 seconds
2
10 minutes
3
9 minutes
4
6 minutes