BANK CBI Sub Staff (Safai Karmachari) Mock Test 2024 Quantitative Aptitude Time and Work Pipe and Cistern
Two pipes can fill a tank in 12 hours and 18 hours respectively, while the third can empty it in 20 hours. If all the pipes are opened together, then the tank will be filled in
1
11 1/2 hours
2
11 hours
3
10 hours
4
9 1/10 hours
5
None of these