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      Question

      If the ratio of number of boys and girls present in the

      playground is 5:4. 10 boys left the playground, leaving total number of girls same as the boys playing in the playground. Find the difference between total number of girls and boys present initially.
      A 11 Correct Answer Incorrect Answer
      B 10 Correct Answer Incorrect Answer
      C 12 Correct Answer Incorrect Answer
      D 13 Correct Answer Incorrect Answer
      E None of the above Correct Answer Incorrect Answer

      Solution

      Let, Number of boys initially = 5x
      Number of girls initially = 4x
      When, 10 boys left the playground, leaving total number of girls same as the boys playing in the playground
      (5x - 10) = 4x
      x = 10
      So the difference between number of boys and girls is present initially is 10

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