Question

    A can complete a task in 20 days, and B can complete the

    same task in 25 days. If A works for 6 days and then leaves, in how many days will B complete the remaining work?
    A 14 days Correct Answer Incorrect Answer
    B 12.5 days Correct Answer Incorrect Answer
    C 15 days Correct Answer Incorrect Answer
    D 17.5 days Correct Answer Incorrect Answer

    Solution

    Work done by A in 6 days = 6 × (1/20) = 3/10.  Remaining work = 1 - 3/10 = 7/10.  Time taken by B = (7/10) ÷ (1/25) = 17.5 days.  Correct option: d

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