Step-by-step explanation:
So 4:3 means for 4 girls there are 3 boys. In total, that would be 7.
So, we divide 28 by 7 for 4 meaning 1 in the 4:3 is 4.
And since we are dealing with girls, 4*4=16
To check, 4*3=12 Boys and 16+12=28
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