Răspuns:
Ms=md+mapa
C=md*100/ms
10=100md/md+325
100md=10md+3250
90md=3250
Md=36
Ms=361
mapa=325 g
C=10%
ms=?
md=?
c=md/md+mapa×100
md*100=C×md+C×ma pa
md(100-c)=C×mapa
md=C×mapa/100-C=10*325 / 100-10=36,11
ms=md+mapa=36,11+325=361,11
Explicație:
