SOLUTION
From the question, the original price of the jeans was $40, then the price was reduced to $35. Decrease in price becomes
[tex]40-35=5\text{ dollars }[/tex]Percent decrease becomes
[tex]\begin{gathered} =\frac{decrease\text{ in price}}{original\text{ price}}\times100 \\ =\frac{5}{40}\times100 \\ =\frac{1}{8}\times100 \\ =12.5 \end{gathered}[/tex]hence the answer is 12.5%
