other govt exam CCI Junior Commercial Executive & Junior Assistant 2024 Mock Tests Quantitative Aptitude Time and Work Pipe and Cistern
Two pipes can fill a cistern in 3 hours and 3 hours 45 minutes respectively and a third pipe can empty the whole cistern in an hour. The cistern is half filled with water and all the three pipes are opened together. After how many times cistern will be emptied?
1
1 hour 15 minutes
2
45 minutes
3
1 hour 30 minutes
4
1 hour 45 minutes