Cross-country competition

The cross-country competition was attended by 76% of pupils of class 9B. The class consists of 16 boys, two of whom did not run, and four girls did not run.

How many girls go to class 9B?

Correct answer:

x =  9

Step-by-step explanation:

(16-2)+(x-4) = 76/100 · (16+x)

24x = 216

x = 216/24 = 9

x = 9

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