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    Question

    Ajay alone can complete a work in 50 days. Vijay is four

    times as efficient as Ajay. Find the percentage of work completed by Ajay and Vijay together in 10 days.
    A 43% Correct Answer Incorrect Answer
    B 60% Correct Answer Incorrect Answer
    C 80% Correct Answer Incorrect Answer
    D 100% Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let the efficiency of Ajay = x units/day

    Total work = 50x units

    Efficiency of Vijay = x × 4 = 4x units/day

    Work done by Ajay and Vijay together in 10 days = (x + 4x) × 10 = 50x units

    Percentage of work done = (50x / 50x) × 100 = 100%

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