Precision Tax Service offers tax and consulting services to individuals and small businesses. Data for fees and costs of three types of tax returns follow. Precision provides services in the ratio of 5:3:2 (easy, moderate, business). Fixed costs total $18,000 for the tax season. Use this information to determine the (1) selling price per composite unit, (2) variable costs per composite unit, (3) breakeven point in composite units, and (4) number of units of each product that will be sold at the break-even point