General Office Supplies produces one product with a unit selling price of $800. The variable cost per unit is $500 and the total fixed costs is $240,000 for the year. The business's target profit for the year is $300,000. Required Calculate the following items. Provide a formula and show all your workings for each part. 1. Calculate the contribution margin per unit. 2. Calculate the contribution margin ratio. 3. Calculate the break-even point in units. 4. Calculate the break-even point in dollars. 5. Calculate the sales in dollars required to achieve the target profit