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    Question

    Suman alone can complete a work in 40 days. Pooja is twice

    as efficient as Suman. Find the percentage of work completed by Suman and Pooja together in 8 days.
    A 43% Correct Answer Incorrect Answer
    B 60% Correct Answer Incorrect Answer
    C 80% Correct Answer Incorrect Answer
    D 75% Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let the efficiency of Suman = x units/day

    Total work = 40x units

    Efficiency of Pooja = x × 2 = 2x units/day

    Work done by Suman and Pooja together in 8 days = (x + 2x) × 8 = 24x units

    Percentage of work done = (24x / 40x) × 100 = 60%

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