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    Question

    The average age of three children is 20 years. If their

    ages are in the ratio 2:3:5. Find the age of the youngest child.
    A 12 years Correct Answer Incorrect Answer
    B 15 years Correct Answer Incorrect Answer
    C 13.5 years Correct Answer Incorrect Answer
    D 18 years Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Total age of three children = 20 ×3 = 60 years Let their ages be 2x, 3x and 5x respectively. => 2x + 3x + 5x = 60 => 10x = 60 => x = 6 Therefore the age of youngest child = 2×6 = 12 years

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