Mathematics, 18.12.2020 23:10, WildfireintheHeart

There are 4 students with braces for every 7 students without braces. There are 28 sixth-grade students that have braces at Valley Middle School. How many students are in sixth grade in all?

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There are 4 students with braces for every 7 students without braces. There are 28 sixth-grade stude...