engineering recuitment PGCIL Diploma Trainee Mock Test 2024 Quantitative Aptitude Time and Work Pipe and Cistern
Two taps P and Q can fill a cistern in 30 and 20 minutes respectively. Both P and Q were opened for a few minutes after which P was closed. The rest of the cistern was filled by Q in 5 minutes. After how many minutes was pipe P closed?
1
10 minutes
2
12 minutes
3
8 minutes
4
9 minutes