Question
There were 144 students at a canteen at first. After 27 of the boys and 12 of the girls left, there were still 21 more girls than boys at the canteen. How many girls were there at first?
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There were 144 students at a canteen at first. After 27 of the boys and 12 of the girls left, there were still 21 more girls than boys at the canteen. How many girls were there at first?