Guidance and practice of seventh grade mathematics

Solution: If the average score of boys is X, the average score of girls is 1 10%, and the number of girls is Y, Then the number of boys is110% y (110% y * x+10% x * y)/(y+1/kloc). Kloc-0/ y2.2x = 88 * 2. 1x = 84, then the average score of girls is 84* 1 10%=92.4.

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