Jakim procentem liczby x jest liczba y, jeśli: x=36;y=90 x=12,5;y=8,75 x=1420;y=63,9 x=10 i 5/12;y=40 i 31/36
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y/x*100%
x=36;y=90
90/36*100%=250%
x=12,5;y=8,75
8,75/12,5*100%=70%
x=1420;y=63,9
63,9/1420*100%=4,5%
x=10 i 5/12;y=40 i 31/36
1471/36 * 12/125 *100%=392,3%