Răspuns:
ms1=200g c1=20%
ms2=200g c2=10%
ms3=200g
Explicație:
c=mdx100/m=>
md1=c1xms1/100=20×200/100=40g=>
md1=>40g
md2=csxms2/100=>10×200/100=>20g=>
md2=>20g
masa finala=ms1+ms2+ma3=200g+200g+200g=600g
c finala=md finalx100/ms2finala=60gx100/600g=6000g/600g=10=>c finala=>10%
COROANA?✨
