ЁЯУв Too many exams? DonтАЩt know which one suits you best? Book Your Free Expert ЁЯСЙ call Now!

    Question

    Pipe A fills a tank in 20 hours, Pipe B fills it in 30

    hours, and a leak empties it in 60 hours. If all are opened together, in how many hours will the tank be filled?
    A 12 hrs Correct Answer Incorrect Answer
    B 15 hrs Correct Answer Incorrect Answer
    C 18 hrs Correct Answer Incorrect Answer
    D 21 hrs Correct Answer Incorrect Answer

    Solution

    ATQ, Net rate = 1/20 + 1/30 - 1/60 LCM = 60 = 3/60 + 2/60 - 1/60 = 4/60 = 1/15 Time = 15 hours

    Practice Next
    More Pipes and cisterns Questions

    Relevant for Exams:

    ask-question