16% liczby 48 = 16/100 * 48 = 16/25 * 12 = 192/25 = 7 15,5% liczby 80 = 155/1000 * 80 = 155/100 * 8 = 1240/100 = 12,4 106% liczby 3,2 = 106/100 * 32/10 = 53/50 * 16/5 = 53/25 * 8/5 = 424/125 = 3 49/125 94% liczby 100 = 94/100 * 100 = 94 35% liczby 40 = 35/100 * 40 = 35/10 * 4 = 140/10 = 14 13% liczby 8 = 13/100 * 8 = 104/100 = 1 4/100 = 1 1/25 20,2% liczby 75 = 202/1000 * 75 = 202/40 * 3 = 606/40 = 15 6/40 = 15 3/20
[latex]16\%=frac{16}{100}=frac{4}{25}\\frac{4}{25}cdot48=frac{192}{25}=7frac{17}{25}\\15,5\%=frac{15,5}{100}=frac{155}{1000}=frac{31}{200}\\frac{31}{200}cdot80=frac{31}{5}cdot2=frac{62}{5}=12frac{2}{5}\\106\%=frac{106}{100}=frac{53}{50}\\frac{53}{50}cdot3,2=frac{53}{50}cdotfrac{32}{10}=frac{53}{25}cdotfrac{8}{5}=frac{424}{125}=3frac{49}{125}\\94\%=frac{94}{100}=frac{47}{50}\\frac{47}{50}cdot100=47cdot2=94[/latex] [latex]35\%=frac{35}{100}=frac{7}{20}\\frac{7}{20}cdot40=7cdot2=14\\13\%=frac{13}{100}\\frac{13}{100}cdot8=frac{13}{25}cdot2=frac{26}{25}=1frac{1}{25}\\20,2\%=frac{20,2}{100}=frac{202}{1000}=frac{101}{500}\\frac{101}{500}cdot75=frac{101}{20}cdot3=frac{303}{20}=15frac{3}{20}[/latex] [latex]Można dzialac na ulamkach dziesietnych zamieniajac procenty\na ulamki dziesietne:\\16\%=0,16\\0,16cdot48=7,68\\15,5\%=0,115\\0,115cdot80=12,5\\106\%=1,06\\1,06cdot3,2=3,392\\94\%=0,94\\0,94cdot100=94[/latex] [latex]35\%=0,35\\0,35cdot40=14\\13\%=0,13\\0,13cdot8=1,04\\20,2\%=0,202\\0,202cdot75=15,15[/latex]
