Boatsman Inc. sells a single product for $200. Variable costs include $100 for each unit plus a 8% sales commission. Fixed costs are $193,200 per month a. What is the contribution margin percentage? (Round final answer to 2 decimal places.) Contribution Margin % 1:03 b. What is the breakeven sales revenue? (Round final answer to the nearest whole dollars.) Break Even Sales Revenue c. What sales revenue is needed to achieve a $406,000 per month profit? (Round final answer to the nearest whole dollars.)