other govt exam ISRO Junior Personal Assistant Mock Test 2022 Quantitative Aptitude Time and Work Pipe and Cistern
A tank can be filled by Pipe A in 15 hours and another Pipe B which is drain all the water from the tank in 45 hours. If they work alternatively hours and starts from A, then how much time taken to fill the tank by them?
1
43 hours
2
45 hours
3
46 hours
4
47 hours