Question
In a school field, 49 of the students wore spectacles. After 117 students who wore spectacles left the school field, the percentage of students who wore spectacles decreased to 30%. How many students in the school field did not wear spectacles?
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In a school field, 49 of the students wore spectacles. After 117 students who wore spectacles left the school field, the percentage of students who wore spectacles decreased to 30%. How many students in the school field did not wear spectacles?