New Click here to Enroll for SIDBI MSME Expert Classes by Experts

    Register

    Question

    ‘X’ and ‘Y’ together can complete a work in 16

    days, while ‘Y’ and ‘Z’ together can complete the work in 10 days. If ‘Y’ takes 20 days to complete the work alone then find the time taken by all three together to complete 45% of work.
    A 3 days Correct Answer Incorrect Answer
    B 7 days Correct Answer Incorrect Answer
    C 9 days Correct Answer Incorrect Answer
    D 5 days Correct Answer Incorrect Answer
    E 4 days Correct Answer Incorrect Answer

    Solution

    Let the total work = 80 units Efficiency of (X + Y) = 80/16 = 5 units/day Efficiency of (Y + Z) = 80/10 = 8 units/day Efficiency of ‘Y’ = 80/20 = 4 units/day Efficiency of (X + Y + Z) = (1 + 4 + 4) = 9 units/day Required time taken = (0.45 × 80)/9 = 4 days

    Practice Next