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Average age of A, B, C, and D is 45 years. After adding E, the average becomes 49 years. What is the age of E?
  1. 65
  2. 69
  3. 73
  4. 77
Explanation

Sum of A,B,C,D = 45 * 4 = 180  

New average after E = 49 with 5 persons → Total sum = 49 * 5 = 245  

E's age = 245 - 180 = 65 years


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