Question

Calcule o valor de b e c, onde b/4 = c/2 e b+c = 90. Marque a questão que corresponde aos valores de b e c.

Answer 1

b+c=90 -> b=90-c

b/4=c/2 -> 90-c/4=c/2 -> 4c=180-2c -> c=180/6 -> c=30

b+30=90 -> b=60