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[tex]\frac{1}{2}\% = \frac{1}{2} *\frac{1}{100} =\frac{1}{200}[/tex]
[tex]\frac{1}{3} \%=\frac{1}{3} *\frac{1}{100} =\frac{1}{300}[/tex]
[tex]\frac{3}{4}\%=\frac{3}{4} *\frac{1}{100}=\frac{3}{400}[/tex]
[tex]\frac{17}{20}\%=\frac{17}{20} *\frac{1}{100} = \frac{17}{2000}[/tex]
[tex]\frac{25}{33}\%=\frac{25}{33} *\frac{1}{100} =\frac{1}{33} *\frac{1}{4} =\frac{1}{132}[/tex]