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    Question

    35 men can complete a piece of work in 40 days. ‘x’

    men started the work and after 30 days 60 more men joined them so that whole work was finished in the desired time. Find the value of ‘x’
    A 25 Correct Answer Incorrect Answer
    B 22 Correct Answer Incorrect Answer
    C 20 Correct Answer Incorrect Answer
    D 23 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Total work = 35 × 40 = 1400 units According to question; 30 × x + 10 × (x + 60) = 1400 Or, 30x + 10x + 600 = 1400 Or, 40x = 800 Or, x = 20

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