SSC SSC Selection Post (Phase 13) 2025 Mock Test Quantitative Aptitude Time and Work Pipe and Cistern
A pipe P can drain out water from a tank in 20 hours. Another pipe Q can drain 20 litres per hour. If both drains are opened, the tank is emptied in 12 hours. What is the capacity of the tank?
1
600 litres
2
800 litres
3
400 litres
4
650 litres