BANK SBI Clerk Mock Test Series 2025 (Pre + Mains) Quantitative Aptitude Time and Work Pipe and Cistern
There are two pipes in a cistern A and B. A can fill it in 30 minutes and B can empty it in 60 minutes. if A and B are kept open alternatively for one minute each, in how much time will the cistern be filled?
1
113 minutes
2
120 minutes
3
115 minutes
4
117 minutes
5
121 minutes