BANK SBI PO Mock Test Series 2025 (Pre + Mains) Quantitative Aptitude Time and Work Pipe and Cistern
A pipe can fill a tank in 15 minutes and another in 10 minutes. A third pipe can empty a tank in 5 minutes. The first two pipes were open for 4 minutes in the beginning and after that third pipe is also opened, then in what time the tank be emptied?
1
35 min
2
20 min
3
15 min
4
40 min
5
25 min