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    5. The ratio of number of boys and girls in a factory of 660 workers is 7:5. How many more girls should

    Question

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

    660 workers is 7:5. How many more girls should be joined to make the ratio 1:1?
    A 272 Correct Answer Incorrect Answer
    B 184 Correct Answer Incorrect Answer
    C 110 Correct Answer Incorrect Answer
    D 240 Correct Answer Incorrect Answer

    Solution

    Number of boys = (660 × 7/12) = 385 Number of girls = (660 - 385) = 275 ∴    Number of girls to be joined = (385 - 275) = 110

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