Mathematics, 29.09.2019 01:10, Trishamw04

There were 250 students in the 7th grade class last year. this year, there are 320 students. what is the percent change in the number of 7th grade students between last year and this year?

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There were 250 students in the 7th grade class last year. this year, there are 320 students. what is...