Exercise 6-4 Computing and using the CM Ratio (LO6-3) 16 Last month when Holiday Creations, Inc., sold 38,000 units, total sales were $317,000, total variable expenses were $263,110, and fixed expenses were $36,500 Required: 1. What is the company's contribution margin (CM) ratio? 2. What is the estimated change in the company's net operating Income if it can increase total sales by $1,900? (Do not round Intermediate calculations.) 1. Contribution margin ratio 2. Estimated change in net operating income