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Sea:
x= paquetes de 2 kg
y= paquetes de 5 kg
2x+5y= 550 ----Ec.1
x+y= 200
x= 200-y ----Ec2
Sustituyendo 2 en 1
2x+5y= 550
2(200-y)+5y= 550
400-2y+5y= 550
3y= 550-400
3y= 150
y= 150/3
y= 50
x= 200-y
x= 200-50
x= 150
Respuesta.
150 paquetes de 2kg
50 paquetes de 5 kg
Comprobación:
2x+5y= 550
2(150)+5(50)= 550
300+250= 550