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mr= 15 kg
cp1= 8 %
ms2= 3 kg = 3000 g
szukane: cp2= ?
rozwiązanie :
cp= ms/mr x 100 %
cp= ms +ms2/ ms+ ms2 x 100 %
ms= 8 % x 3000/x 100 %
3 kg x
15*x=3kg * 8%
x=3kg*8% / 15kg
x=3 i 3(kreska ulamkowa)8%
8% - 3 i 3(kreska ulamkowa)8%
=4 i 5(kreska ulamkowa) 8%