Resposta :
x / y = 6/5
5x = 6y
x + y = 550 ( x5 )
5x + 5y = 2750
6y + 5y = 2750
y = 250
5x = 6y
x = 6y / 5
x = 6 . 250 / 5
x = 300
R : 300 km de diametro
5x = 6y
x + y = 550 ( x5 )
5x + 5y = 2750
6y + 5y = 2750
y = 250
5x = 6y
x = 6y / 5
x = 6 . 250 / 5
x = 300
R : 300 km de diametro