Question
There were 207 students at a hall at first. After 37 of the boys and 12 of the girls left, there were still 21 more girls than boys at the hall. How many girls were there in the end?
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There were 207 students at a hall at first. After 37 of the boys and 12 of the girls left, there were still 21 more girls than boys at the hall. How many girls were there in the end?