Respuesta :

geshu

Step-by-step explanation:

let the num be 3x & 4x

3x+4x=28

7x=28

x=28/7

x=4

now, num of girls=3x=3×4=12

& num of boys=4x=4×4=16

sarahacluxton

Answer: 12 girls

Step-by-step explanation: You first want to make this equation become a fraction with the number of girls on top and the total on bottom. This becomes 3/7. To make this over 28, multiply by 4 on the top and the bottom. This makes 12/28, making 12 girls the answer.

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