ms1=100g
c1=30%
c2=8%
mapa=?
Afla md din primele 2 relatii:
c1=[tex]\frac{md1}{ms1}[/tex] *100=> md1=[tex]\frac{ms1*c1}{100}[/tex] = [tex]\frac{100*30}{100}[/tex]=30 g
md1=30g
md1=m2 (diluare)
ms2=ms1+apa
c2=[tex]\frac{md2}{ms2}[/tex]*100=>ms2=[tex]\frac{md2*100}{c2}[/tex]=[tex]\frac{30*100}{8}[/tex]=375g (aproximativ)
ms1+mapa=375g
100g+mapa=375g
mapa=375g-100g
mapa=275g
