The ratio of the present ages of father and his son is 9:4. The product of their ages 2 years ago was 34 times of his son’s age that year. What was son’s age 4 year ago?
Let present age of father and son be 9x and 4x respectively. According to question, => (9x – 2) (4x – 2) = 34 × (4x – 2) => (9x – 2) = 34 => 9x = 36 => x = 4 Therefore, son’s age 4 years ago = (4x – 4) = 12 years
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