15kg morcovi+10kg adrei=85 lei
3kg morcovi+8kg ardei=41 lei /x5
---------------------------------------------
15m+10a=85
15m+40a=205
-------------------------
// 30a=120
a=120:30
a=4
1kg ardei=4 lei
15m+10x4=85
15m+40=85
15m=85-40
15m=45
m=3 lei
1 kg morcovi=3 lei
proba: 15x3+10x4=45+40=85
