Răspuns:
1.
md=20g
ms=300g
C=?
C=md×100/ms=20×100/300=6,67&
2.
md=60
C=15%
ms=?
ms=md×100/C=60×100/15=400g
3.
md=80g
C=5%
ms=?
ms=md×100/C=80×100/5=1600g
4.
md=40
mapa=210g
ms=md+mapa=2410+40=250g
C=md×100/ms=40×100/250=16%
5.
md=17g
C=5%
ms=?
ms=md×100/C=17×100/5=340g
6.
ms=280g
C=2%
md=?
md=C×ms/100=280×2/100=5,6g
Explicație:
