A markdown is a reduction in the price of an item.
Markdown rate is calculated using the formula:
[tex]\text{Markdown rate = }\frac{\text{Original price - Sale price}}{Original\text{ price}}\times100\text{ }[/tex]
Given:
Original price = $ 50
Sale price = $ 30
Substituting:
[tex]\begin{gathered} \text{Markdown rate = }\frac{50-30}{50}\times\text{ 100} \\ =\frac{20}{50}\times\text{ 100 \%} \\ =\text{ 40 \%} \end{gathered}[/tex]
Hence, the markdown rate for the shoes is 40%
Answer: Option D
