state gov OSSC CGL (Combined Graduate Level) Mock Test 2025-26 Quantitative Aptitude Time and Work Pipe and Cistern
Three pipes A, B and C can fill a cistern in 270 hours. After working together for 90 hours, C is closed, then A and B filled the remaining part in 270 hours. Find the number of hours taken by C required to fill the empty cistern.
1
820
2
810
3
800
4
790