RRB ALP · Pipes and Cisterns · Quiz
5 real RRB ALP questions on Pipes and Cisterns. Instant scoring and solutions, no signup — see where you stand in ~3 minutes.
Question 1 of 5
EASYPipe A can fill a tank in 12 hours while pipe B can empty it in 18 hours. If both pipes are opened together, in how many hours will the tank be filled?