πŸ“’ Too many exams? Don’t know which one suits you best? Book Your Free Expert πŸ‘‰ call Now!


    Question

    β€˜A’ and β€˜B’ can do a piece of work in 30 days

    and 20 days, respectively. If they started the work together and worked on it for 4 days, then find the time taken by β€˜B’ alone to complete the remaining work.
    A 47/3 days Correct Answer Incorrect Answer
    B 46/3 days Correct Answer Incorrect Answer
    C 40/3 days Correct Answer Incorrect Answer
    D 41/3 days Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Let total amount of work be 60 unitsΒ  Efficiency of β€˜A’ = 60/30 = 2 units/day Efficiency of β€˜B’ = 60/20 = 3 units/day Amount of work done by β€˜A’ and β€˜B’ together in 4 days = (2 + 3) Γ— 4 = 20 units Time taken by B to complete remaining work = (60 – 20)/3 = 40/3 days

    Practice Next
    ask-question