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Mathematics, 05.11.2019 08:31 aspenbaxter201634

Of the 15-year-olds at a karate school, 7 have black belts and 10 have brown belts. among the 16-year-olds, 10 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, 7 have black belts and 10 have brown belts. among the 16-yea...
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