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2010-04-06T16:19:57+02:00
Mr=120g
cp=40%
mw=200g
cp1=?
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cp=ms*100%/mr
ms=cp*mr/100%=40%*120g/100%=48g
mr1=mr+mw=120g+200g=320g
cp1=ms*100%/mr1=48g*100%/320g=15%
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