6. Refer to the original data. Assume again that the company sold 25,500 units last year. The president feels that it would be unwise to change the selling price. Instead, he wants to increase the sales commission by $6 per unit. He thinks that this move, combined with some increase in advertising, would increase annual unit sales by 50%. By how much could advertising be increased with profits remaining unchanged? Do not prepare an income statement; use the incremental analysis approach. The amount by which advertising can be increased is Klein Company distributes a high-quality bird feeder that sells for $45 per unit. Variable costs are $18 per unit, and fixed costs total $420,000 annually. Sales Variable expenses $710,000 206,000 Contribution margin Fixed expenses 504,000 420,000 Operating income $ 84,000