New 55% Off on All Courses - Enroll Now! Click Here

    Question

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

    7:5. The product of their ages 3 years ago was 32 times of his son’s age that year. What was son’s age 4 year ago?
    A 17 years Correct Answer Incorrect Answer
    B 12 years Correct Answer Incorrect Answer
    C 21 years Correct Answer Incorrect Answer
    D 26 years Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Let present age of father and son be 7x and 5x respectively. According to question,   => (7x – 3) (5x – 3) = 32 × (5x – 3)   => (7x – 3) = 32   => 7x = 35   => x = 5   Therefore, son’s age 4 years ago = (5x – 4) = 21 years

    Practice Next

    Relevant for Exams: