a$1)$ what is the contribution ratio

a$2)$ what is the change in operating income

Question 12 of 13 -/4 Blossom Orthotics Company distributes a specialized ankle support that sells for $30. The company's variable costs are $18 per unit; fixed costs total $360,000 each year. Calculate contribution margin ratio. (Round ratio to 2 percentage places, e.g. 0.38 Contribution margin ratio eTextbook and Media Save for Later = 38%.) Submit Answer If sales increase by $39,000 per year, by how much should operating income increase? (Use the rounded contribution margin ratio calculated in the previous part.)