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The present age of a mother is three times that of her daughter. After 12 years, the mother's age will be twice the daughter's age. What is the daughter's present age (in years)?

Competition practiceAverages & Ages
  • A12
  • B10
  • C14
  • D16

Step-by-Step Solution

Let the daughter be D and mother 3D. Then 3D + 12 = 2(D + 12) gives 3D + 12 = 2D + 24, so D = 12 years.
Answer: A) 12

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