答案：$\$585$
該椅子的售價
該椅子的售價
$\begin{array}{cl}
= & 360\times(1+30\%) \\
= & \$468
\end{array}$
該椅子的標價
$\begin{array}{cl}
= & 468 \div (1-20\%) \\
= & \$585
\end{array}$
