1%=1/100=0,01
%
12-100%
3-x
x= 3× 100/12= 300/12= 25%
liczba 3 to 25% liczby 12
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1%=1/100=0,01
%
12-100%
3-x
x= 3× 100/12= 300/12= 25%
liczba 3 to 25% liczby 12