To find the trade discount rate, use the following formula:
[tex]d=\frac{a-b}{a}\cdot100[/tex]Where d is the discount, a is the list price and b is the net price after the discount.
Replace for the given values and find the discount rate:
[tex]\begin{gathered} d=\frac{13600-8840}{13600}\cdot100 \\ d=\frac{4760}{13600}\cdot100 \\ d=\frac{7}{20}\cdot100 \\ d=35 \end{gathered}[/tex]The trade discount rate was 35%.
