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    Question

    The ratio of the present ages of father and his son is

    8:5. The product of their ages 3 years ago was 45 times of his son’s age that year. What was son’s age 4 year ago?
    A 20 years Correct Answer Incorrect Answer
    B 27 years Correct Answer Incorrect Answer
    C 26 years Correct Answer Incorrect Answer
    D 29 years Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Let present age of father and son be 8x and 5x respectively. According to question, => (8x – 3) (5x – 3) = 45 × (5x – 3) => (8x – 3) = 45 => 8x = 48 => x = 6 Therefore, son’s age 4 years ago = (5x – 4) = 26 years

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