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AHSME 1983 Problem 9

    In a certain population the ratio of the number of women to the number of men is 1111 to 1010. If the average (arithmetic mean) age of the women is 3434 and the average age of the men is 3232, then the average age of the population is (A) 32910(B) 322021(C) 33(D) 33121(E) 33110\textbf{(A)}\ 32\frac{9}{10} \textbf{(B)}\ 32\frac{20}{21} \textbf{(C)}\ 33 \textbf{(D)}\ 33\frac{1}{21} \textbf{(E)}\ 33\frac{1}{10}

    Dataset text NuminaMath-1.5. Quoted with source.

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    33\frac{1}{21}

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