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The present age of a father is three times that of his son. After 12 years, the father's age will be twice that of his son. Find the present age of the son.

Competition practiceAverages & Ages
  • A10
  • B15
  • C12
  • D14

Step-by-Step Solution

Let the son be s, so father = 3s. After 12 years: 3s + 12 = 2(s + 12), giving s = 12 years.
Answer: C) 12

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