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      Question

      How many boys are there in the class? I. The

      number of girls is 30% of the number of boys. II. The ratio of the number of boys to that of girls is 3:5. Each of the following questions below consists of a question and two statements numbered I and II given below it. You have to decide whether the data provided in the statements are sufficient to answer the question. Read both the statements and give answer.
      A If the data in statement I alone are sufficient to answer the question, while the data in statement II alone are not sufficient to answer the question. Correct Answer Incorrect Answer
      B If the data in statement II alone are sufficient to answer the question, while the data in statement I alone are not sufficient to answer the question. Correct Answer Incorrect Answer
      C If the data either in statement I alone or statement II alone are sufficient to answer the question. Correct Answer Incorrect Answer
      D If the data in both statement I and II together are not sufficient to answer the question. Correct Answer Incorrect Answer
      E If the data in both statement I and II together are necessary to answer the question. Correct Answer Incorrect Answer

      Solution

      From I G = 30/100 B ∴ 10B = 3G From II B/G = 3/5 ∴ 5B = 3G. Hence, both are not sufficient to answer the question.

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