d=m/V
m=V*d
m=50*0,8
m=40 g
ms=40 g
mw=200 g
mr=200 g+ 40 g= 240 g
cp=ms*100%/mr
cp=40*100%/240
cp=16,66%
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d=m/V
m=V*d
m=50*0,8
m=40 g
ms=40 g
mw=200 g
mr=200 g+ 40 g= 240 g
cp=ms*100%/mr
cp=40*100%/240
cp=16,66%