Three years ago, the average age of a family of 5 members was 17 years. A baby having been born and the average age of the family is the same as three years ago. The present age of the baby (in years) is:

  • A. 2
  • B. 1.5
  • C. 2.5
  • D. 3
Correct Answer: A. 2
Total age 3 years ago = 5×17 = 85; each member aged 3 years → 100; total now 6×17 = 102 → baby’s age = 102−100 = 2.

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