Răspuns:
trebuie sa rezulte o valoare cuprinsa intre c1 si c2
ms1=400g
c1=10%
ms2=400g
c2=50%
c3=md3x100/ms3 unde ms3=ms1+ms2=400g+400g=800g
md3=md1+md2
md1=c1xms1/100=10x400/100g=40g
md2= c2xms2/100=50x400/100=200g
md3= 240g
c3= 240x100/800=30%
Explicație: