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Sticky Note
Four years ago the average of son's and father's age was 27.5. Today, the ratio of their age is 5:16. Find out the son's present age.
  1. 16
  2. 15
  3. 14
  4. 48
Explanation
  • Four years ago, the total age: .
  • Present total age:
    55 + 8 = 63    .
  • Ratio 5:16: Son's age =.

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