The percent markup of the sweatshirt is 60%
Here, we want to calculate the percenatge of profit made by the store
Mathematically;
![\text{Percentage markup = }\frac{(sales\text{ price-cost price)}}{\cos t\text{ price}}\text{ }*\text{ 100\%}](https://img.qammunity.org/2023/formulas/mathematics/college/fk7p77fcjpomx53js77293owymkzm9hlg7.png)
From the question, we can deduce the following;
cost price is the price the store bought the sweatshirt = $12
sales price is the amount in which they sold the sweatshirt = $19.20
Thus, we proceed to substitute these values into the markup equation above;
![\begin{gathered} \text{Perecentage markup = }((19.20-12))/(12)\text{ }*\text{ 100\%} \\ \\ \text{Percentage markup = }(7.20)/(12)\text{ }*\text{ 100\%} \\ \\ =\text{ 60\%} \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/zbca627camf85n7qm080zrpm7tko25w0yx.png)