Respuesta :

Answer:

x = 15, y = 10

Step-by-step explanation:

x + y = 25

y = 25 - x

4x + 2y = 80

4x + 2(25 - x) = 80

4x + 50 - 2x = 80

2x + 50 = 80

2x = 30

x = 15

x + y = 25

15 + y = 25

y = 10