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The sum of the present ages of a father and his son is 60 years. Six years ago the father's age was five times the son's age. Find the son's present age. (answer in years)

Competition practiceAverages & Ages
  • A14
  • B16
  • C12
  • D15

Step-by-Step Solution

Let son = s, father = 60 − s. Six years ago: (60 − s − 6) = 5(s − 6) ⇒ 54 − s = 5s − 30 ⇒ 6s = 84 ⇒ s = 14.
Answer: A) 14

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