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Mathematics, 23.04.2020 05:22 poohmoney

9. Una sala de cine presenta películas de tres tipos:
-Infantiles; del Oeste americano
-Terror.
Se sabe que:
El 60% de las películas infantiles más el 50% de las del oeste representan el 30% del total de las películas.
El 20% de las infantiles más el 60% de las del oeste más del 60% de las de
terror al representan la mitad del total de las películas.
Hay 100 películas más del oeste que de infantiles.
Halla el número de películas de cada tipo.
Rpta

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9. Una sala de cine presenta películas de tres tipos:
-Infantiles; del Oeste americano
-...
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