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      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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