Zad.1
ms=50 g
mw=450g
mr=ms+mw
mr=50g+450g=500g
Cp=(ms÷mr)*100%
Cp=(50g÷500g)*100%= 10%
Zad 2
mr= 400g
Cp= 25%
Cp=(ms÷mr)*100%
ms=(Cp*mr)÷100%
ms= (25%*400g)÷100%= 100g
Zad.3
ms= 60 g
Cp= 10%
Cp=(ms÷mr)*100%
Cp*mr=ms*100%
mr=(ms*100%)÷Cp
mr=(60g*100%)÷10%=600 g