defence exam CISF Head Constable Ministerial (HCM) & ASI Steno Mock Test Series Quantitative Aptitude Time and Work Pipe and Cistern
Choose the most appropriate answer.
There are three taps which are either filling a tank or emptying it. If all the three taps are opened together, the tank is filled in 10 hrs. One of the taps fills in 5 hrs and another in 10 hrs. What does the 3rd tap do?
1
Empties the tank in 10 hrs.
2
Empties the tank in 20 hrs.
3
Empties the tank in 5 hrs.
4
Fills the tank in 10 hrs.