Question

A pair of tennis shoes was 25% off its original price. The amount of the discount was $8.00. What was the original price of the shoes? A. $32.00 B. $16.00 C. $40.00 D. $24.00

Answer 1

To solve the exercise you can use a rule of three, like this

`\begin{gathered} 25\text{\% }\rightarrow\text{ \$}8\Rightarrow\text{ Discount} \\ 100\text{\% }\rightarrow\text{ \$x }\Rightarrow\text{ Original price} \end{gathered}`
`\begin{gathered} x=\frac{100\text{\%}\cdot\text{ \$8}}{25\text{\%}} \\ x=\frac{100\cdot\text{ \$8}}{25} \\ x=\text{ \$}(100\cdot8)/(25) \\ x=\text{ \$}(800)/(25) \\ x=\text{ \$}32 \end{gathered}`

Therefore, the original price of the shoes was $32.00.