Exercise 4 In 2019 Karly Company had a break-even point of $800,000 based on a selling price of $10 per unit and fixed costs of $320,000. In 2020 the selling price and variable costs per unit did not change, but the break-even point increased to $920,000. Instructions a) Calculate the variable cost per unit for 2019 and 2020. b) Calculate the contribution margin ratio for 2019 and 2020,a airt wort nickpea vitund c) Calculate the amount of total fixed costs for 2020. Spalonox