25% (option D)
Explanation:Old price = $24.00
New price = $18.00
[tex]Percent\text{ of }decrease=\text{ }\frac{new\text{ price - old price}}{\text{old price}}\times100[/tex][tex]\begin{gathered} \text{Percent of decrease =}\frac{18-24}{24}\times100 \\ =\frac{-6}{24}\times100 \end{gathered}[/tex][tex]\begin{gathered} \text{percent of decrease = -}0.25\times100 \\ \text{percent of decrease = -}25\text{percent} \end{gathered}[/tex]Percent of decrease is 25% (option D)
