other govt exam CSIR Junior Secretariat Assistant (JSA) 2025 Mock Test Quantitative Aptitude Time and Work Pipe and Cistern
Pipe A can fill an empty cistern in 6.8 hours. Pipe B can fill it up in 10.2 hours. Only Pipe B is turned on for 1.7 hours after which Pipe A is also tuned on. How much time will it take in all to fill up the cistern?
1
5 hours 6 minutes
2
5 hours 12 minutes
3
5 hours 5 minutes
4
5 hours 10 minutes