Question
In a hall, 19 of the students wore cardigans. After 248 students who wore cardigans entered the hall, the percentage of students who wore cardigans increased to 80%. How many students in the hall did not wear cardigans?
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In a hall, 19 of the students wore cardigans. After 248 students who wore cardigans entered the hall, the percentage of students who wore cardigans increased to 80%. How many students in the hall did not wear cardigans?