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    Question

    A is younger than B by 4 years. If the ratio of A and B

    ages is 5:7 respectively, then find the age of A.
    A 5 years Correct Answer Incorrect Answer
    B 12 years Correct Answer Incorrect Answer
    C 7 years Correct Answer Incorrect Answer
    D 16 years Correct Answer Incorrect Answer
    E 10 years Correct Answer Incorrect Answer

    Solution

    If B’s age be x years, then A’s age be (x - 4) years. According to question, => (x – 4)/x = 5/7 => 7x – 28 = 5x => x = 14 Therefore A's age = 14 – 4 = 10 years

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