Mathematics, 12.02.2020 04:19 emmaraeschool

Of the 15-year-olds at a karate school, 5 have black belts and 9 have brown belts. Among the 16-year-olds, 13 have black belts and 19 have brown belts. Which age group has a lower ratio of black belts to brown belts?

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Of the 15-year-olds at a karate school, 5 have black belts and 9 have brown belts. Among the 16-year...