Multiple choice

Five years ago, the average age of A and B was 11 years. After adding the age of C to the ages of A and B, the average remained the same. How old is C now?

  1. 14 years

  2. 18 years

  3. 11 years

  4. 16 years

  5. 13 years
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Five years ago, average age of A and B = 11 years So, sum of ages of A and B, 5 years ago = 11 x 2 = 22 years On adding the age of C, average age of A, B and C = 11 years So, (22 + C)/3 = 11 22 + C = 33 C = 11 Therefore, 5 years ago, C's age was 11 years. So, present age of C = 11 + 5 = 16 years

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