Retail price calculator

Question

Create a C# GUI application that lets the user enter an item’s wholesale cot and its mark-up percentage. It should then display the item’s retail price. For Example

? If an item’s wholesale cost is $5.00 and mark-up percentage is 100 percent, then the item’s price is $10.00.

? If an item’s wholesale cost is $5.00 and mark-up percentage is 50 percent, then the item’s price is $7.50.

The program should have a method named calculateRetail that receives the wholesale cost and the mark-up percentage as arguments and returns the retail price of the item.