Multiple choice

The ratio between Baatu’s present age and her son’s age is 28: 1. After 11 years, Baatu’s age will be 3 years less than 3.5 times of her son’s age at that time. What is Baatu’s present age?

  1. 24 years

  2. 26 years

  3. 28 years

  4. 30 years

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

Let Baatu's age be 28x and son's age be x. After 11 years: Baatu = 28x + 11, son = x + 11. Given: 28x + 11 = 3.5(x + 11) - 3 = 3.5x + 38.5 - 3 = 3.5x + 35.5. So 28x + 11 = 3.5x + 35.5, giving 24.5x = 24.5, so x = 1. Baatu's present age = 28 × 1 = 28 years.