BANK IBPS RRB Clerk 2025 Mock Test Series (Pre + Mains) Quantitative Aptitude Time and Work Pipe and Cistern
A, B and C take 12, 15 and 20 hours to fill the tank. They start together to fill the tank. A is removed 7 hours before the tank is filled and B is removed 4 hours before the tank is filled. The tank is filled by C. The time required for tank to fill (in hours) is?
1
9.25
2
8.25
3
9.5
4
9
5
8.5