defence exam ITBP Constable (Animal Transport) Mock Test 2024 Quantitative Aptitude Time and Work Pipe and Cistern
Pipe A can fill a tank in 10 hours and pipe B can empty the same tank in 15 hours. If both the pipes are opened simultaneously, then in how much time tank can be filled?
1
9 hours
2
18 hours
3
20 hours
4
30 hours