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      Question

      The total strength of school A is 60% more than that of

      school B. In school A and B, out of total number of students, 10% and 20% respectively are girls. The number of boys in school A is how much percent more/less than that in school B?
      A 75% Correct Answer Incorrect Answer
      B 80% Correct Answer Incorrect Answer
      C 60% Correct Answer Incorrect Answer
      D 62.5% Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Let the total number of students in school B be โ€˜xโ€™. Therefore, total number of students in school A = 1.6x Number of boys in school A = 0.90 ร— 1.6x = 1.44x Number of boys in school B = 0.8x Required % = [(1.44x โ€“ 0.8x)/0.8x] ร— 100 = 80%

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