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10 September, 20:11

In a gym class the ratio of girls to total students is 4:7 there are 9 boys in the gym class how many students are in the gym class

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  1. 10 September, 20:39
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    4:7 = x/9+x. 36 + 4x = 7x. 36=3x. x=12. x=girls in class. x+9=all students in class.
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