Kevin Gui's Furniture is a company producing high-end quality furniture for home and offices. The following revenues and cost data for 2022 are: Revenues $494,000 Cost of goods sold (50% of sales) $247,000 Gross Margin $247,000 Operating costs: Salaries (Fixed) $154,000 Sales commissions (10% of sales) $49,400 Depreciation of equipment and fixtures $15,000 Store rent ($2,600 per month) $31,200 Other operating costs $39,980 $289,580 Operating profit (loss) $-42,580 Mr. Kevin, the owner of the store, is unhappy with the operating results. An analysis of other operating costs reveals that it includes $34,580 variable costs, which vary with sales volume, and $5,400 (fixed) costs. Do not enter dollar signs or commas in the input boxes. a) What is the contribution margin of Kevin Gui's Furniture? Contribution margin: $Answer b) What is the contribution margin percentage? Round your answer to 2 decimal places. Contribution margin percentage: Answer % c) Mr. Kevin estimates that he can increase revenues by 20% by incurring additional advertising costs of $18,000. As a result, how much would Kevin Gui's Furniture's operating profit be? Round all answers to the nearest whole number. Use the negative sign for an operating loss. Incremental revenue: $Answer Incremental contribution margin: $Answer Incremental fixed costs: $Answer Incremental operating profit: $Answer Operating profit (loss) at 20% increased revenue: $Answer