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

    Question

    The ratio of number of boys and girls in a factory of

    600 workers is 7:3. How many more girls should be joined to make the ratio 1:1?
    A 272 Correct Answer Incorrect Answer
    B 160 Correct Answer Incorrect Answer
    C 240 Correct Answer Incorrect Answer
    D 150 Correct Answer Incorrect Answer

    Solution

    Number of boys = (600 × 7/10) = 420 Number of girls = (600 - 420) = 180 ∴    Number of girls to be joined = (420 - 180) = 240

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