state gov Kolkata Police Constable Mock Test 2024 Quantitative Aptitude Time and Work Pipe and Cistern
Tap A can fill a cistern in 18 minutes, B can fill it in 36 minutes, and C in 54 minutes. Tap A opened for 1 minute after that tap B was opened for 4 minutes after that tap C is opened. What is the total time (in minutes) required to fill the tank?
1
50
2
45
3
60
4
36