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VARVARA [1.3K]
3 years ago
11

Averiguar el número de animales de una granja sabiendo que la suma de patos y vacas es 132 y la de sus patas es 402 se necesitan

200 kilogramos de ligas para alimentar a las gallinas y a los gallos se tiene un gallo por cada seis gallinas se sabe que una gallina come una media de 500 g el doble que un gallo se piensa que la sexta parte de los conejos escapan al comedero de las vacas lo que se supone el triple de animales en dicho comedero
​
Spanish
1 answer:
liberstina [14]3 years ago
6 0

Answer:

Averiguar el número de animales de una granja sabiendo que la suma de patos y vacas es 132 y la de sus patas es 402:

El número de cada especie en la granja es:

patos: 63

vacas: 69

Explanation:

Consideración:

Las vacas tienen 4 patas

Los patos tiene 2 patas

Planteamiento:

p + v = 132          primer ecuación

2p + 4v = 402     segunda ecuación

p = cantidad de patos que hay en la granja

v = cantidad de vacas que hay en la granja

Desarrollo:

De la primer ecuación del planteamiento:

p = 132 - v    tercer ecuación

sustituyendo este último valor en la segunda ecuación del planteamiento:

2(132-v) + 4v = 402

(2*132 + 2*-v) + 4v = 402

264 - 2v + 4v = 402

2v = 402 - 264

2v = 138

v = 138/2

v = 69

de la tercer ecuación

p = 132 - v

p = 132 - 69

p =  63

Comprobación:

de la segunda ecuación del planteamiento:

2p + 4v = 402

2*63 + 4*69 = 402

126 + 276 = 402

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