Question
At a lunch function, every parent brought 1 or 2 children. If the ratio of the number of parents to the number of children was 7 : 12, what fraction of the parents brought 1 child?
2 m

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At a lunch function, every parent brought 1 or 2 children. If the ratio of the number of parents to the number of children was 7 : 12, what fraction of the parents brought 1 child?