Question

Mihai are de trei ori mai muți bani decat Sandu.Împreuna au 60lei. Aflati ce suma de bani are fiecare

Answer 1

a+b=60; a=3b; 3b+b=60; 4b=60; b=15lei; a=45lei

Answer 2

M+S=60 lei    (Mihai+Sandu)
M=3xS
3S+S=60
4S=60
S=60:4
S=15 lei  are Sandu
M=3x15
M=45 lei are  Mihai
V: 45+15=60