Question
In a school field, 910 of the boys wore ties. After 140 boys who wore ties left the school field, the percentage of boys who wore ties decreased to 20%. How many boys in the school field did not wear ties?
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In a school field, 910 of the boys wore ties. After 140 boys who wore ties left the school field, the percentage of boys who wore ties decreased to 20%. How many boys in the school field did not wear ties?