mework Required Saved Exercise 5-4 Computing and Using the CM Ratio (LO5-3) Last month when Holiday Creations, Inc., sold 45,000 units, total sales were $313,000, total variable expenses were $222,230, and fixed expenses were $39,700. 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