To find what percent of the purchase price the sale price is, you can use the formula:
\[ \text{Percentage} = \left( \frac{\text{Sale Price}}{\text{Purchase Price}} \right) \times 100 \]
In this case, the sale price is $72.00 and the purchase price is $40.00.
Substituting the values into the formula:
\[ \text{Percentage} = \left( \frac{72.00}{40.00} \right) \times 100 \]
Calculating the fraction:
\[ \frac{72.00}{40.00} = 1.8 \]
Now, multiply by 100 to get the percentage:
\[ 1.8 \times 100 = 180% \]
Therefore, the sale price is 180% of the purchase price.