Question
In a basketball court, 49 of the boys wore cardigans. After 207 boys who wore cardigans entered the basketball court, the percentage of boys who wore cardigans increased to 70%. How many boys in the basketball court did not wear cardigans?
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In a basketball court, 49 of the boys wore cardigans. After 207 boys who wore cardigans entered the basketball court, the percentage of boys who wore cardigans increased to 70%. How many boys in the basketball court did not wear cardigans?