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    Question

    The average age of 21 children is 30 years. 4 new

    children, whose average age is 15 years, join them. Find the average age of the 25 children.  
    A 26.5 Correct Answer Incorrect Answer
    B 27.6 Correct Answer Incorrect Answer
    C 25.6 Correct Answer Incorrect Answer
    D 24.2 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

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