Răspuns :
Răspuns:
a+b+c=200
[tex] \frac{a}{5} = \frac{b}{6} = \frac{c}{9} = k \\ a = 5k \\ b =6k \\ c = 9k \\ a + b + c = 200 \\ 5k + 6k + 9k = 200 \\ 20k = 200 \\ k =10 \\ a = 5 \times 10 = 50 \\ b = 6 \times 10 = 60 \\ c = 9 \times 10 = 90 [/tex]
Succes