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Kay [80]
3 years ago
7

Pedro compra 1 chocolate y 2 dulces con $18. María compra 3 chocolates y 1 dulce con $29, al llegar a casa su mamá les pregunta:

¿Cuál es el costo de cada producto?
Spanish
1 answer:
dusya [7]3 years ago
8 0

Answer:

El costo de cada artículo es:

chocolate: $8

dulce: $5

Explanation:

1c +  2d = 18

3c +  1d  = 29

c = costo de cada chocolate

d = costo de cada dulce

Al multiplicar por -3 la primer ecuación y sumarla con la segunda ecuación:

-3c  -  6d  =  -54

3c   +  1d  =  29

  0   -  5d  =  -25

-5d = -25

d = 25/5

d = 5

1c + 2d = 18

1c + 2*5 = 18

c + 10 = 18

c = 18 - 10

c = 8

Comprobación:

3c + 1d = 29

3*8 + 5 = 29

24 + 5 = 29

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