state gov Kolkata Police Constable Mock Test 2024 Quantitative Aptitude Time and Work Work Efficiency
Pipes A and B together can fill a tank in 16 hours, whereas pipe C alone can empty the full tank in 24 hours. A and B were opened together for 10 hours and then closed. Pipe C was then opened. The tank will now be emptied by C in:
1
18 hours
2
12 hours
3
10 hours
4
15 hours