Exercise 4 In 2015 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 2016 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 2015 b. Calculate the contribution margin ratio for 2015. c. Calculate the amount of total fixed costs for 2016