Feather Friends, Inc., distributes a high-quality wooden birdhouse that sells for $40 per unit. Variable expenses are $20.00 per unit, and fixed expenses total $160,000 per year. Its operating results for last year were as follows: Sales $ 1,080,000 Variable expenses 540,000 Contribution margin 540,000 Fixed expenses 160,000 Net operating income $ 380,000 Required: Answer each question independently based on the original data: 1. What is the product's CM ratio