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    Question

    The average age of three children is 25 years. If their

    ages are in the ratio 2:6:7. Find the age of the youngest child.
    A 10 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 = 25 ├Ч┬а3 = 75 years Let their ages be 2x, 6x and 7x respectively. => 2x + 6x + 7x = 75 => 15x = 75 => x = 5 Therefore the age of youngest child = 2┬а├Ч 5 = 10 years

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