Question

Encontre os valores desconhecidos:

x/2 = y/3 = z/4 e x+y+z = 135

???

Answer 1

x/2 = y/3 = z/4 = ( x + y + z)/ ( 2 + 3 + 4 )
substitua  x + y + z por 135
x/2 = y/3 = z/4 = 135/9
x/2 = 135/9
9x = 270
x = 270/9 = 20 ****

y/3 = 135/9
9y = 405
y = 45 *****

z/4 = 135/9
9z = 540
z = 60 *****

Answer 2

x/2 = y/3 = z/4
x+y+z = 135

x + y + z = 135 ==> 15
2+3 +4         9

x = 15 ==> x = 15.2 ==> x = 30
2

y = 15 ==> x = 15.3 ==> y = 45
3

z = 15 ==> x = 15.4 ==> z = 60
4