Răspunsuri

2014-06-02T13:53:26+03:00
X lei costa treinigul
1/2x a economisit mai ramane 1/2x
1/4*1/2x=1/8x primeste de la bunici
1/2x+1/8x+42=x
5/8x+42=z
3/8x=42
x=112 lei
1 1 1