100g 30% ....................3-0=3
..................3%
xg 0%........................30-3=27
100/x = 3/27
3x = 2700
x = 900g rozpuszczalnika
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100g 30% ....................3-0=3
..................3%
xg 0%........................30-3=27
100/x = 3/27
3x = 2700
x = 900g rozpuszczalnika