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    Question

    The average age of three children is 15 years. If their

    ages are in the ratio 2:3:4. Find the age of the youngest child.
    A 12 years Correct Answer Incorrect Answer
    B 10 years Correct Answer Incorrect Answer
    C 7 years Correct Answer Incorrect Answer
    D 15 years Correct Answer Incorrect Answer

    Solution

    Total age of three children = 15 × 3 = 45 years Let their ages be 2x, 3x and 4x respectively. => 2x + 3x + 4x = 45 => 9x = 45 => x = 5 Therefore the age of youngest child = 2 × 5 = 10 years

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