Civil Services Uttar Pradesh (उत्तर प्रदेश) PCS Mock Test Series 2025 Quantitative Aptitude Time and Work Pipe and Cistern
If 3 pumps can empty a tank in 2 days by working 8 hours a day, then how many hours must 4 pumps work to empty the tank in one day?
1
12 hours
2
9 hours
3
15 hours
4
10 hours