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0,08*2=0,16 kg = 160 g
2kg=2000g
100g--8g
2000g--x
x=2000*8/100
x=160g
Odp.trzeba uzyc 160 gram soli.
_ - ilośc soli
100
2 kg - ilośc rostworu
2kg*0.08=0.16