Mathematics, 04.10.2019 18:30 glowbaby123

Class a has x students and class b has y students. the average of class a is 85 and class b is 90. when the scores of class a and b are combine the average is 88, what is the ratio of x to y

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Class a has x students and class b has y students. the average of class a is 85 and class b is 90. w...