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2 kg cukru
3kg-woda
2g+3g=5kg-mAsa syropu
dwie piate *100%=40%
b} 2kg+1kg=3kg-cukier
5kg+1kg=6kg-masa syropu
trzy szóste *100%=50%
c} 3kg-cukier
6kg+4kg=10kg-masAsyropu
trzy dziesiate *100%=30%