Profit Margin: The markup of an item is the difference between its selling price and its purchase- price. The profit margin is the quotient (markup / selling price), expressed as a percentage.

Start writing an event procedure with the header;

Private Sub btnCompute_Click(...) Handles btnCompute.Clcik, and has one- line of code (statement) for each step described below to calculate the profit margin of an item. Lines that display data should use the given variable names.

1. Declare the variable purchasePrice as type Decimal and assign it the value 215.50.
2. Declare the variable sellingPrice as type Decimal and assign it the value 29.99.
3. Declare the variable markup as type Decimal and assign it the difference of the selling price and purchase price.
4. Declare the variable pofitMargin as type Decimal and assign it 100 times the quotient of (markup / sellingPrice).
5. Display the pofitMargin in a list box.