Do 200g 60% roztworu dolano 100g wody. Oblicz nowe stezenie procentowe roztworu
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Do 200g 60% roztworu dolano 100g wody. Oblicz nowe stezenie procentowe roztworu
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200g -100%
x g-60%
x=120 g
po dodaniu
300g -100%
120g-x
x= 120*100/300=40%
Do 200g 60% roztworu dolano 100g wody. Oblicz nowe stezenie procentowe roztworu
200g*60%+100g*0%=300g*x%
1200=300x
x=40[%]