Answer :

naǫ
[tex]5\frac{1}{20}=\frac{5 \cdot 20+1}{20}=\frac{101}{20} \\ \\ \frac{101}{20} \cdot 100\%=\frac{10100}{20} \%=505\%[/tex]

The answer is C.
[tex]5\frac{1}{20}=5\frac{5}{100}=5.05=505\%[/tex]

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