insurence exam NICL Assistant (Pre + Mains) Mock Test 2024 Quantitative Aptitude Time and Work Pipe and Cistern
A tap can fill the cistern in 6 hrs and second one can empty the cistern in 4 hrs. If the cistern is already full, find the time to empty the cistern when both taps opened simultaneously.
1
5 hrs
2
12 hrs
3
10 hrs
4
9 hrs
5
None of these