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Se stie ca x/2=y/11=z/7 si x+y+z=80

Răspuns :

x / 2 = y / 11 = z / 7 = k

2k + 11k + 7k = 80

20 k = 80

k = 4


x = 2k => x = 2 × 4 = 8

y = 11k => 11 × 4 = 44

z = 7k = > 7 × 4 = 28

x + y + z = 80