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    Question

    25 laborers working 7 hours daily can finish a road in

    16 days. If 35 laborers work 8 hours each day, how many days are needed?
    A 10 days Correct Answer Incorrect Answer
    B 12 days Correct Answer Incorrect Answer
    C 14 days Correct Answer Incorrect Answer
    D 28 days Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let the efficiency of a laborer = 'x' units/hour

    Total work = 25 × x × 7 × 16 = 2800x units

    Number of days = 2800x ÷ (35 × x × 8)= 2800x ÷ 280x = 10 days

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