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Mathematics 11 Online
OpenStudy (anonymous):

Of the 15-year-olds at a karate school, 6 have black belts and 8 have brown belts. Among the 16-year-olds, 7 have black belts and 11 have brown belts. Which age group has a lower ratio of black belts to brown belts?

OpenStudy (anonymous):

help

OpenStudy (j2lie):

15 years old because 6 and 8 are smaller than 7 and 11.

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