miguelfdezcp00 miguelfdezcp00
  • 23-02-2021
  • Spanish
contestada

En la granja se han envasado 300 L de leche en 120

botellas de 2 y 5 L. ¿Cuántas botellas de cada clase se han

utilizado?​

Respuesta :

eduartspineda
eduartspineda eduartspineda
  • 23-02-2021

Answer:

2X + 5Y = 300 (1)

X + Y = 120 (2)

DE 1 despejas x

X+Y = 120

X = 120 - Y (3)

Reemplazas en (1)

2X + 5Y = 300

2(120-Y) + 5Y = 300

240 - 2Y + 5Y = 300

3Y = 300- 240

3Y = 60

Y = 60/3

Y = 20

Reemplazas en (3)

X = 120 - Y

X = 120 - 20

X = 100

¿cuantas botellas de cada clase se han utilizado?

R. 100 botellas de 2 litros y 20 botellas de 5 litros

Answer Link

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