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

    Question

    Ten women working nine hours a day complete a particular

    job in 20 days. If an additional 20 women were employed and they all worked 12 hours a day, how many days would it take to finish the same task?
    A 4 Correct Answer Incorrect Answer
    B 5 Correct Answer Incorrect Answer
    C 6 Correct Answer Incorrect Answer
    D 7 Correct Answer Incorrect Answer

    Solution

    Using men X days X hours = constant New number of women = 20 + 10 = 30 Let required number of days be 'x' So, (10 X 9 X 20) = (30 X 12 X x) Or, x = (10 x 9 x 20)/(30 x 12) =  5 Required number of days = 5 Hence, option b.

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