Question

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?

Answer 1

The 15-year old age group has the lower ratio (15years = 7:10. 16yr = 10:19