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AHSME 1973 Problem 12

    The average (arithmetic mean) age of a group consisting of doctors and lawyers in 40. If the doctors average 35 and the lawyers 50 years old, then the ratio of the numbers of doctors to the number of lawyers is (A) 3:2(B) 3:1(C) 2:3(D) 2:1(E) 1:2\textbf{(A)}\ 3: 2 \textbf{(B)}\ 3: 1 \textbf{(C)}\ 2: 3 \textbf{(D)}\ 2: 1 \textbf{(E)}\ 1: 2

    Dataset text NuminaMath-1.5. Quoted with source.

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    2:1

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