(Chapters 18.20&27) 27 WSW Tax Service offers tax and consulting services to individuals and small businesses Data for fees and costs for three types of tax returns is presented in the table below Foxed costs total $80,000 Variable Cest Type of Return Seles Rix Fee Charged per Return $ 100 Moderate Business 30% 20% 330 190 630 240 The weighted average contribution margin is WEW Tax Service offers tax and consulting services to individuals and small businesses Data for fees and costs for three types of tax returns is presented in the table below Fied costs total $80.000 Type of Return Variable Cost Easy Moderate Business Sales Mix Fee Charged per Heturn 50% $180 $ 100 330 190 20% 630 240 The weighted average contributon margin