defence exam Coast Guard Navik GD (General Duty) 02/2025 Mock Test Series Quantitative Aptitude Time and Work Pipe and Cistern
Pipes A and B alone can fill an empty tank in 10 hours and 20 hours respectively. Pipe C alone can empty the full tank in 12 hours. In how many hours pipes A, B and C together can fill the empty tank?
1
12 hours
2
13 hours
3
18 hours
4
15 hours