x=norma muncitor 1
y=norma muncitor 2
100%+10%=110%
100%+20%=120%
100%+5%=105%
110%x+120%y=4650
90%x+105%y=3975
110x+120y=465000 ⇒11x+12y=46500 ⇒ y=(46500-11x)/12
90x+105y=397500
90x+105(46500-11x)/12=397500
1080x+4882500-1155x=4770000
75x=112500
x=1500 piese muncitor 1
y=(46500-11*1500)/12=2500 piese muncitor 2