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    Question

    Efficiency of 'D' is 80% more than that of 'E' and 25%

    less than that of 'F'. They start working together, but 'E' leaves after 3 days, and the remaining work is completed by 'D' and 'F' together in 4 days. How long would it take for 'D' to complete the entire work alone?
    A 18 days Correct Answer Incorrect Answer
    B 25 days Correct Answer Incorrect Answer
    C 35 days Correct Answer Incorrect Answer
    D 65 days Correct Answer Incorrect Answer
    E none of these Correct Answer Incorrect Answer

    Solution

    ATQ,

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