[tex] \frac{ninos}{ninas} = \frac{3k}{4k} \\ \\ \\ ninos = 3k \\ \\ \\ 15 = 3k \\ \\ 5 = k \\ \\ \\ ninas = 4k = 4(5) = 20[/tex]
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Analizando
[tex] \frac{ninos}{ninas} = \frac{3k}{4k} \\ \\ \\ ninos = 3k \\ \\ \\ 15 = 3k \\ \\ 5 = k \\ \\ \\ ninas = 4k = 4(5) = 20[/tex]