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      Question

      The ratio of the number of boys to the number of girls who

      are present in a class is 3:2. The number of girls who are absent is 15, which is 25% of the total number of students in the class. If no boy is absent, then find the number of boys in the class.
      A 24 Correct Answer Incorrect Answer
      B 21 Correct Answer Incorrect Answer
      C 18 Correct Answer Incorrect Answer
      D 30 Correct Answer Incorrect Answer
      E 27 Correct Answer Incorrect Answer

      Solution

      Total number of students = 15/0.25 = 60
      Number of students who are present = 60 – 15 = 45
      Therefore, number of boys in the class = 45 × 3/5 = 27

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