Răspuns:
1.
ms=600g
md=36g
C=?
C=md×100/ms=36×100/600=6%
2.
md=80g
mapa=240g
ms=md+mapa =89+240=320g
C=md×100/ms=80×100/320=25%
3.
ms=700g
C=25%
md=?
md=C×md/100=25×700/100=175g
4.
md=120g
C=30%
ms=?
ms=md×100/C=120×100/30=400g
5.
md=144g
ms=1200g
C=?
C=md×100/ms=144×100/1200=12%
Succes