New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    55 men can complete a piece of work in 12 days. 15 men

    started the same work and worked for 10 days, and then joined by ‘x’ more men such that the remaining work is completed in 10 days. Find the value of ‘x’.
    A 40 Correct Answer Incorrect Answer
    B 31 Correct Answer Incorrect Answer
    C 39 Correct Answer Incorrect Answer
    D 36 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    According to the question, 55 × 12 = 15 × 10 + (15 + x) × 10 Or, 660 = 150 + 150 + 10x Or, 660 - 300 = 10x Or, x = 36

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