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Multiple choice

The sum of the age of father and his son is 68 years. The ratio of their ages is 3: 1 respectively. What is the age of the son?

  1. $51$
  2. $16$
  3. $17$
  4. $18$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Let the ages be 3x and x. Sum is 4x=68, so x=17. The son's age is x=17 years. The father's age is 3x=51 years.

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