MURDER TO GO! writes and manufactures murder mystery parlor games that it sells to retail stores. The following is per-unit information relating to the manufacture and sale of this product LO20-4, LO20-5, LO20-6 EXERCISE 20.7 Using Cost-Volume-Profit $ Unit sales price 30 Formulas Variable cost per unit 6 Fixed costs per year 360,000 Determine the following, showing putation. For example, the formula used to determine the contribution margin ratio (part a) is as follows as part of your answer the formula that you used in your com- Contribution Margin Ratio = Unit Sales Price -- Variable Costs per Unit Unit Sales Price Contribution margin ratio. a. Sales volume (in dollars) required b. to break even. Sales volume (in dollars) required to earn an annual operating income of $440,000 C. d. The margin of safety (in dollars) if annual sales total 60,000 units. Operating income if annual sales total 60,000 units e