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      Question

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

      550 workers is 6:5. How many more girls should be joined to make the ratio 1:1?
      A 20 Correct Answer Incorrect Answer
      B 40 Correct Answer Incorrect Answer
      C 70 Correct Answer Incorrect Answer
      D 50 Correct Answer Incorrect Answer

      Solution

      Number of boys = (550 × 6/11) = 300 Number of girls = (550 - 300) = 250 ∴    Number of girls to be joined = (300 - 250) = 50

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