state gov Calcutta High Court Lower Division Assistant (LDA) Mock Test 2024 Quantitative Aptitude Time and Work Pipe and Cistern
Pipe A can fill a tank in 20 hours and pipe B can fill the same tank in 24 hours. Pipe C can empty the same tank in 12 hours. If all the pipes are opened together, then what portion of the tank will be filled after 12 hours?
1
1/10
2
1/5
3
1/15
4
9/11