we have the following:
We can solve the problem by means of a rule of proportionality, that is, if 4 brownies were divided with 6 boys, how many brownies would be for 3 girls who received the same amount
[tex]\begin{gathered} 6\rightarrow4 \\ 3\rightarrow x \\ x=\frac{3\cdot4}{6}=\frac{12}{6}=2 \end{gathered}[/tex]Therefore, in total are 2 brownies
