state gov Patna High Court Assistant 2023 Mock Test 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 number of hours taken by C required to fill the cistern.
1
800
2
810
3
820
4
790