please answer 3, 4, and 5 completely.

Todrick Company is a merchandiser that reported the following information based on 1,000 units sold: Sales Beginning merchandise inventory Purchases Ending merchandise inventory Fixed selling expense Fixed administrative expense Variable selling expense Variable administrative expense Contribution margin Net operating income $360,000 $ 24,000 $ 240,000 $ 12,000 $ $ 14,400 $ 18,000 $ $ 72,000 $ 21,600 3. Calculate the selling price per unit. 4. Calculate the variable cost per unit. 5. Calculate the contribution margin per unit. 3. Selling price per unit 4. Variable cost per unit 5. Contribution margin per unit