Mathematics, 30.04.2021 16:20 anonymousanon

At a certain middle school, there are 200 5th graders, 220 6th graders, 180 7th graders, and 150 8th graders. The Dean of Students chooses a scholar at random to help run Community Circle. What is the probability that a 7th grader is chosen?

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At a certain middle school, there are 200 5th graders, 220 6th graders, 180 7th graders, and 150 8th...