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      Question

      In a class there were 10 students. 4 students left the

      class and 6 new students joined the class thus the average age of the class got decreased by 1.5 years and the total age of all the students in the class got increased by 9 years then find the new average age of the class?
      A 12 years Correct Answer Incorrect Answer
      B 12.5 years Correct Answer Incorrect Answer
      C 11.5 years Correct Answer Incorrect Answer
      D 13 years Correct Answer Incorrect Answer

      Solution

      The correct answer is A

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