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2010-03-18T17:40:26+01:00
Mr=120g
Cp=10%

ms/mr=cp/100%

ms=120*10/100
ms=12g

mr=mrp+ms
mrp=mr-ms
mrp=120-12
mrp=108g

108+30=138g
mr2=138g.+12g=150g

ms/mr=cp/100%
12g/150g=cp/100%

cp=ms*100%/mr
cp=12g*100%/150g


cp=8%