问题: 11
the student of grade five made flowers of 3 kinds of colors. for each color, there are 25 flowers. they used some for decorating the classroom and there are 28 left now. how many flowers did they use for the classroom?
解答:
5年级的学生制作3种不同颜色的花。每种颜色做了25朵，他们用了一部分来装饰教室，还剩下28朵。他们用了多少朵花来装饰教师？
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