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
Is this present or preterite tense?
Regular verbs are characterized by following an outline, so it is less difficult to use them in our conversation. On the other hand, irregular verbs, as their name suggests, are those that once conjugated change or alter their lexeme in some of its forms.
