Question

Mihai are de trei ori mai multi bani decat Sandu.Impreunaau 60 de lei.Aflati ce suma de bani are fiecare?

Answer 1

M = 3 * S
M + S = 60
si acum inlocuim in ecuatie: 3S + S = 60 => 4S = 60 => Sandu are 15 lei.
M + 15 = 60 => Mihai are 45 lei.

Answer 2

M=mihai
S=sandu

m+s=60
m=3s
60:4=15 bani are mihai 
14·3=45