Question
In a school field, 15 of the students wore cardigans. After 135 students who wore cardigans entered the school field, the percentage of students who wore cardigans increased to 80%. How many students in the school field did not wear cardigans?
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In a school field, 15 of the students wore cardigans. After 135 students who wore cardigans entered the school field, the percentage of students who wore cardigans increased to 80%. How many students in the school field did not wear cardigans?