$35
Explanation:original price = $100
mark down = 65%
[tex]New\text{ price = }(1\text{ - markdown rate) }\times\text{ original price}[/tex][tex]\begin{gathered} \text{New price = (1 - 65\%) }\times\text{ 100} \\ \text{New price = 35\% }\times100 \end{gathered}[/tex][tex]\begin{gathered} New\text{ price = 0.35 }\times\text{ 100} \\ \text{New price = \$35} \end{gathered}[/tex]