Find the area of the square

She has 6 kids (2 boys, 4 girls, since her total amount of kids is three times the amount of boys, 2 x 3 = 6 total)

4 girls : 2 boys

compare ratios with the answer choices.

4:2 =\= 4:8

4:2 =\= 8:6

4:2 =\= 6:9

4:2 = 12:6 ! When you multiply 4:2 by 3, you get 12:6.

I hope this helps!