BANK IBPS RRB Clerk 2025 Mock Test Series (Pre + Mains) Quantitative Aptitude Time and Work Pipe and Cistern
A tap having a diameter d can empty a tank in 60 min. How long another tap having diameter 2d take to empty the same tank?
1
12 min
2
8 min
3
10 min
4
15 min
5
None of these