Multiple choice

The present age of the father and the son are in the ratio of 8:3. After 12 years the ratio of their ages will be 2:1. What is the sum of the present age of the father and the son?

  1. 80 years

  2. 76 years

  3. 73 years

  4. 70 years

  5. 66 years

Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Let present ages be 8x and 3x. After 12 years, ages become (8x + 12) and (3x + 12). Given (8x + 12)/(3x + 12) = 2/1. Solving: 8x + 12 = 6x + 24, so 2x = 12 and x = 6. Present ages are 48 and 18, sum = 66 years.