6-18 Q5. Given the following, if common fixed expenses are $90,000, what is the contribution margin for Big? Total Big Small Tiny Sales $800,000 $150,000 ? $200,000 CM Ratio 32% ? 25% 40% Traceable fixed $120,000 $25,000 $60,000 ? expenses 1. First compute the Sales for Tiny. 2. Then compute the CM for Total, Small and Tiny. 3. Back into the CM for Big