Victor si Stefan au impreuna 81 de lei. Stefan are de 8 ori mai putini lei decit Victor. Citi lei are fiecare? Multumesc

2
9+72=81
cati lei are victor?
81:8=8
cati leu are fiecare?
victor 8 si stefan 8

Răspunsuri

2014-04-09T21:13:42+03:00
X-nr de bani detinuti de Victor
y-nr de bani detinuti de stefan
x+y=81
8y=x
8y+y=81
9y=81
y=9  x=81-9=72
2014-04-09T22:42:50+03:00
Fie v-Victor
s-Stefan
v+s=81
s=8*v
8v+v=81
9v=81 -> v=9
s=8*v -> s=72