Question
At a charity event, every member brought 1 or 2 children. If the ratio of the number of members to the number of children was 7 : 10, what fraction of the members brought 2 children?
2 m

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At a charity event, every member brought 1 or 2 children. If the ratio of the number of members to the number of children was 7 : 10, what fraction of the members brought 2 children?