Question

mama i a cumparat lui radu doua perechi de pantaloni, o geaca si 3 bluze platind 720 lei.stiind ca o pereche de pantaloni costa cat 2 bluze iar pt geaca a platit cat pt o bluza si o perdche de pantaloni la un loc . afla cat a costat fiecare in parte

Answer 1

2p+g+3b=720
p=2b
g=b+p =>b+2b=3b

2×2b+3b+3b=720
4b+6b=720
10b=720/:10
b=72

p=2b => 2×72= 144
g=3b => 3×72= 216

Verificare: 2× 144+ 216+ 3×72
288+ 216+ 216= 720