Stuart Manufacturing Company reported the following data regarding a product it manufactures and sells. The sales price is $43. Variable costs Manufacturing Selling Fixed costs Manufacturing Selling and administrative 18 per unit 4 per unit $168,000 per year $ 88,200 per year Required a. Use the per-unit contribution margin approach to determine the break-even point in units and dollars b. Use the per-unit contribution margin approach to determine the level of sales in units and dollars required to obtain a profit of $174,300. c. Suppose that variable selling costs could be eliminated by employing a salaried sales force. If the company could sell 20,900 units, how much could it pay in salarles for salespeople and still have a profit of $174,300? (Hint: Use the equation method.) a Break-even point in units Broak-oven point in dollars b. Required sales in units Required sales in dollars c. Fixed cost of salaries