Question

Andrei are de 4 ori mai multi lei decat Ioana .Stiind cadiferenta sumelor celor doi copii este 27, afla cati lei are fiecare .

Answer 1

$x=4y \\ x-y=27 \\ 4y-y=27 \\ 3y=27 \\ y=\frac{27}{3} \\ \Rightarrow \boxed{y=9 \ lei} \\ x=4y \\ x=4 \cdot 9 \ lei \\ \Rightarrow \boxed{x=36 \ lei}$