Multiple choice

The mother's age is six times her son's age. Four years hence the age of the mother will be four times her son's age. What is the present age of the son?

  1. 3 years

  2. 4 years

  3. 5 years

  4. 6 years

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

Let son's age be s. Mother is 6s now. In 4 years: mother = 6s + 4, son = s + 4. Given 6s + 4 = 4(s + 4). Solving: 6s + 4 = 4s + 16, 2s = 12, s = 6. Option D matches; A (3), B (4), C (5) don't satisfy the equation.