Răspunsuri

2014-04-25T10:19:10+03:00
2x+5y=310,      2(60%y)+5y=310       ,120%y+5y=310.   1.2y+5y=310,    6.2y=310.          y=310\6/2=50    y=50 deci x=60% si =30
y=50            x=30