R&R Tax Service offers tax and consulting services to individuals and small businesses. Data for fees and costs for three types of tax returns follow. Fixed costs total $18,000. Type of Return Sales Mix Fee Charged Easy Moderate 50% 30% $ 50 125 Business 20% 275 Variable Cost per (1) Determine the weighted-average contribution margin. Weighted-average contribution margin Return $ 30 75 100 (2) Determine the break-even point in units using the weighted-average contribution margin. Numerator: Denominator: (3) Determine the number of units of each product that will be sold at the break-even point. Easy Moderate Business units units units = = Break Even Units Break even units