Exercise 6-4 Computing and using the CM Ratio (LO6-3] Last month when Holiday Creations, Inc., sold 43,000 units, total sales were $302,000, total variable expenses were $229,520, and fixed expenses were $35,900. 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 $1,700? (Do not round Intermediate calculations.) 1. Contribution margin ratio 2. Estimated change in not operating income