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Aleksandr-060686 [28]
3 years ago
7

-5r- (6r- 1) Whats the answer?

Mathematics
1 answer:
Annette [7]3 years ago
8 0
-11r+1 would be ur simplified answer.
Hope this helped
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Answer:

Se necesitan 37.5 litros del preparado que contiene 5% de jugo natural, y 12.5 litros del que contiene 25%.

Step-by-step explanation:

Primero calculamos la cantidad total de jugo natural que se necesita, a partir del volumen de jugo mixto que se quiere vender:

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Ahora, que X sean los litros del preparado con jugo de 5%, y que Y sean los litros del preparado con jugo de 25%:

La suma de ambos preparados tiene que ser 50 L:

1.    x + y = 50

La suma del jugo natural tiene que ser 5:

2.   x*5/100 + y*25/100 = 5

Por lo que tenemos <em>un sistema de dos ecuaciones y dos incognitas</em>.

Expresamos x en términos de y:

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Reemplazamos x en la segunda ecuación:

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Y despejamos <em>y</em>:

  • 2.5 - 0.05y + 0.25y = 5
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Usando ese valor de y, calculamos x:

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