Last month when Holiday Creations, Inc., sold 40,000 units, total sales were $312,000, total variable expenses were $230,880, and fixed expenses were $36.900 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 $1700? (Do not round intermediate calculations.) 1. Contribution margin ratio 2. Estimated change in net operating income %