Un grupo de 14 mujeres y 16 hombres
formará parejas de trabajo. ¿cuántas
parejas se pueden formar?

Responder:

14 parejas

Explicación paso a paso:

Una pareja es la combinación de un hombre y una mujer.

Dado que la cantidad de hombres reemplaza a la de mujeres en 2, esto significa que podemos emparejar a todas las mujeres con 14 hombres (excluyendo 2 hombres)

Promedio = (14 + 16) / 2

Promedio = 30/2

Promedio = 15

Como no podemos para un número impar de parejas sino pares, la cantidad de parejas que se pueden formar será:

No de parejas = promedio - 1

No de parejas = 15-1

No de parejas formadas = 14

Usando el concepto de proporción, tiene-se que 15 parejas se pueden formar.

-------------------------

La regla de tres es:

1 pareja - 2 personas

x parejas - 30 personas

Aplicando multiplicacción cruzada:

[tex]2x = 30[/tex]

[tex]x = \frac{30}{2}[/tex]

[tex]x = 15[/tex]

Se pueden formar 15 parejas.

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