state gov AP Police SI (Pre+Mains) Mock Test 2022 Quantitative Aptitude Time and Work Pipe and Cistern
Pipes A and B are used to fill the tank. A can fill the tank twice as fast as B. Pipe C and D can empty the tank. D takes same time to empty the tank as taken by B to fill it. Pipe C can empty tank in 6 hours. If all 4 are opened together, how much hour would it take to fill the tank? (Assume: D can empty tank twice as fast as C.)
1
1 hour
2
1.5 hours
3
2 hours
4
2.5 hours