Question
Mary and her two children received $10r in the ratio 3 : 7. If her daughter received $107 more than her son, how much did her son receive? Leave your answer in terms of r.
2 m

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Mary and her two children received $10r in the ratio 3 : 7. If her daughter received $107 more than her son, how much did her son receive? Leave your answer in terms of r.