Answer:
The percentage markdown is approximately 19%
Explanation:
The cost at which the computer store bought the program = $40
The selling price at which the store sold the program = $32.5
The percentage markdown is given as follows;
Let CP represent the cost at which the computer store bought the program, and let SP represent the selling price of the program, we can find the percentage markdown as follows;

CP = $40, SP = 32.5
Therefore, we get;

The percentage markdown ≈ 19%.