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Four cousins have an average age of 12 years. When their uncle joins them, the average age of all five becomes 17 years. How old is the uncle?

Competition practiceAverages & Ages
  • A37
  • B29
  • C17
  • D33

Step-by-Step Solution

Cousins' total = . Total of five = . Uncle's age = 85 − 48 = 37 years.
Answer: A) 37

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