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      Question

      Average age of company A is 26 years and average age of

      both companies A and B is 12 years. If the ratio of number of employees in company A and B is 2:7, then what is the average age of company B?
      A 7 years Correct Answer Incorrect Answer
      B 11 years Correct Answer Incorrect Answer
      C 8 years Correct Answer Incorrect Answer
      D 12 years Correct Answer Incorrect Answer

      Solution

      Average of Company B = (12 Γ— 9 - 2 Γ— 26)/7 Β  => (108 - 52)/7 = 8 years

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