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    Question

    55 men can complete a piece of work in 18 days. β€˜x’

    men started the work and after 9 days 64 more men joined them so that whole work was finished in the desired time. Find the value of β€˜x’
    A 20 Correct Answer Incorrect Answer
    B 25 Correct Answer Incorrect Answer
    C 23 Correct Answer Incorrect Answer
    D 28 Correct Answer Incorrect Answer

    Solution

    Total work = 55 Γ— 18 = 990 units According to question; 9 Γ— x + 9 Γ— (x + 64) = 990 Or, 9x + 9x + 576 = 990 Or, 18x = 576 Or, x = 23

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