state gov Kolkata Police Constable Mock Test 2024 Quantitative Aptitude Time and Work Pipe and Cistern
Pipes A and B can fill a tank in 16 hours and 24 hours, respectively, whereas pipe C can empty the full tank in 40 hours. All three pipes are opened together, but pipe C is closed after 10 hours. After how many hours will the remaining part of the tank be filled ?
1
5 hours
2
\(2 \frac{1}{2}\) hours
3
2 hours
4
\(5 \frac{1}{2}\) hours