# Girls

The boys and girls in the class formed without the rest of the fives, 2 girls and 3 boys. There are 6 girls missing to create mixed pairs (1 boy and 1 girl). How many girls are in the classroom?

Result

d =  12

#### Solution:

$d=2n \ \\ c=3n \ \\ c=d + 6 \ \\ \ \\ \ \\ 3 \cdot \ n=2 \cdot \ n + 6 \ \\ \ \\ n=6 \ \\ \ \\ n=6 \ \\ \ \\ d=2 \cdot \ n=2 \cdot \ 6=12$

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