9 10 11 12 13. 14 15 6 7: 4 For Wickham Co., 2020 sales is $3,000,000 for a total of 20,000 units, fixed expenses are $907,200, and variable costs is 569 per unit S 6 Required: 1. Determine the contribution margin per unit and contribution margin ratio. Calculate Wickham's break-even point in units and in sales dollars for the year 2020. Show your detailed calculations. (5 marks). 2. What is the margin of safety in dollars and margin of safety % at the current sales level? Show your detailed work.(2 marks)