state gov Maharashtra Talathi (तलाठी भरती) Mock Test 2023 Quantitative Aptitude Time and Work Pipe and Cistern
Pipes A, B, and C are attached to an empty cistern. While the first two can fill the cistern in 6.6 and 16.5 hours respectively, the third can drain the cistern, when filled, in 9.9 hours. If all the three pipes are opened simultaneously when the cistern is three-fifths full, how many hours will be needed to fill the cistern?
1
3.5
2
3.6
3
4
4
3.75