Civil Service Exam Reviewer · Averages · hard

The average age of 16 committee members increases by 1 year when a member aged 59 is replaced by a new member. How old is the new member?

  1. 75 years old
  2. 60 years old
  3. 74 years old
  4. 76 years old

Answer

A. 75 years old

Solution

Total age rises by 16 × 1 = 16. New member = 59 + 16 = 75.

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