In the mid-term exam, 48 people from Class 1 participated, and 30 people got excellent math scores. Six (Class 2) has 46 people participating, and 23 people have excellent math scores. Which class has a high rate of excellence in mathematics?
期中考试，六1班有48人参加，有30人的数学成绩是优秀．六(2班)有46人参加，有23人的数学成绩是优秀．哪个班数学成绩的优秀率高？
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