Write as a fraction, then simplify.<br><br>
&bull; 8 as a fraction of 20 = \frac{8}{20}<br>
&bull; HCF of 8 and 20 is 4<br>
&bull; \frac{8 \div 4}{20 \div 4} = \frac{2}{5}<br>
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Final Answer: \frac{2}{5}