Raven Inc. sells a single product for $55. Variable costs include $33.50 for each unit plus a $5 selling expense per unit. Fixed costs are $284,100 per month a. What is the contribution margin percentage? Contribution Margin 0:% b. What is the break-even sales revenue? Break-Even Sales Revenue $ 0 c. What sales revenue is needed to achieve a $300,600 per month profit? Total Sales Revenue Needed $ 0