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Three years ago the average age of a family of 5 members was 17 years. A baby has since been born, and the average age of the family today is still 17 years. How old is the baby?

Competition practiceStatistics
  • A3 years
  • B1 year
  • C4 years
  • D2 years

Step-by-Step Solution

The 5 members now total years. Today's total , so the baby is 2 years old.
Answer: D) 2 years

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