Answer :
To order the numbers, we convert all the numbers to decimal.
[tex]\begin{gathered} 20\%=0.2 \\ \frac{1}{4}=0.25 \\ 30\%=0.3 \\ \frac{4}{5}=0.8 \\ \frac{2}{3}=0.67 \end{gathered}[/tex]Thus, the order with which the numbers are to be placed is:
[tex]\begin{gathered} 20\%,0.2 \\ \frac{1}{4} \\ 30\% \\ 0.55 \\ 0.6 \\ \frac{2}{3} \\ 0.75 \\ \frac{4}{5},0.8 \end{gathered}[/tex]