R&R Tax Service offers tax and consulting services to individuals and small businesses. Data for fees and costs of three types of tax returns follow. R&R provides services in the ratio of 433 (easy, moderate, business). Fixed costs total $19.950 for the tax season Type of Return Easy (for 1068E2) Moderate (forn 1048) Business Fee Charged $ 32 107 257 Variable cost per Return $ 21 66 91 Fee Charged (1) Determine the selling price per composite unit. Ratio Easy (form 1040EZ) Moderate form 1040) Business Total per composite unit 3 Variable cost per return Determine the variable costs per composite unit, Ratio Easy form 1040E2) Moderate form 1045) Business Total per composite unit Contribution margin per composite unit 0.00 0.00