Odpowiedzi

2010-02-21T14:57:30+01:00
Mr1=200g
cp1=25%
mr2=150g
cp2=15%
cp=?
cp=ms*100%/mr
ms1=cp*mr/100%=25%*200g/100%=50g
ms2=15%*150g/100%=22,5g
ms=ms1+ms2=50g+22,5g=72,5g
mr=200g+150g=350g
cp=72,5g*100%/350g=20,7%
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