Ritchie Manufacturing Company makes a product that it sells for $150 per unit. The company incurs variable manufacturing costs of $60 per unit. Variable selling expenses are $18 per unit, annual fixed manufacturing costs are $480,000. and fixed selling and administrative costs are $240,000 per year. Required Determine the break-even point in units and dollars using each of the following approaches: a. Use the equation method. b. Use the contribution margin per unit approach. c. Prepare a contribution margin income statement for the break-even sales volume. Determine the break-even point in units and dollars using the equation method, the contribution margin per unit approach and the contribution margin ratio approach