Ans: $\$585$
The selling price of the chair
The selling price of the chair
$\begin{array}{cl}
= & 360\times(1+30\%) \\
= & \$468
\end{array}$
The marked price of the chair
$\begin{array}{cl}
= & 468 \div (1-20\%) \\
= & \$585
\end{array}$