Răspuns:
Explicație:
ms1=200g
c1=35%
ms2=600g
c2=15%
cf
-se afla md1 si md2 ( de la cele doua sol. )
c1=md1 . 100 :ms1
md1=c1.ms1 : 100
md1=35.200 :100=70g
md2=c2.ms2 :100
md2=15 . 600 :100=90 g
cf = mdf .100 : msf
mdf= md1 +md2
mdf=70g + 90g=160g
msf=ms1 + ms2
msf=200g + 600g=800g
cf= 160.100 : 800=20%