Question
In a school field, 59 of the pupils wore caps. After 310 pupils who wore caps entered the school field, the percentage of pupils who wore caps increased to 90%. How many pupils in the school field did not wear caps?
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In a school field, 59 of the pupils wore caps. After 310 pupils who wore caps entered the school field, the percentage of pupils who wore caps increased to 90%. How many pupils in the school field did not wear caps?