Question
There were 3 times as many girls as boys in the school hall at first. After 9 girls left and 8 boys entered the school hall, there were 5 more girls than boys remaining in the school hall. What was the number of girls in the school hall at first?
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There were 3 times as many girls as boys in the school hall at first. After 9 girls left and 8 boys entered the school hall, there were 5 more girls than boys remaining in the school hall. What was the number of girls in the school hall at first?