defence exam ITBP Constable (Animal Transport) Mock Test 2024 Quantitative Aptitude Time and Work Pipe and Cistern
If two taps A and B can fill a tank in 15 minutes and 30 minutes respectively, and both the pipes are opened together, then find in how much time it will take to fill a tank.
1
10 minutes
2
30 minutes
3
20 minutes
4
40 minutes