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    Question

    Ratio of present ages of 'A' and 'B' is 5:3

    respectively. Eight years later, the ratio of ages of 'B' and 'A' will be 7:9, respectively. Find the age of 'B' six years from now.
    A 10 yrs Correct Answer Incorrect Answer
    B 18 yrs Correct Answer Incorrect Answer
    C 12 yrs Correct Answer Incorrect Answer
    D 24 yrs Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Let the present ages of 'A' and 'B' be '5y' and '3y' years, respectively. So, (5y + 8) : (3y + 8) = 9 : 7 Or, 7 × (5y + 8) = 9 × (3y + 8) Or, 35y + 56 = 27y + 72 Or, 8y = 16 Or, 'y' = 2 Therefore, required age = 3 × 2 + 6 = 12 years

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