Wildhorse Camping Supply sells harsh weather tents. The company has the following income statement. Sales ($1,300 per unit) $260,000 Less: Cost of Goods sold ($565 per unit) 113,000 Gross margin 147,000 Less: Operating costs Salaries $52,000 Advertising 13,065 Sales commissions ($5 per unit) 1,000 Shipping ($15 per unit) 3,000 69,065 Operating income $77.935 Calculate the contribution margin ratio. (Round answers to O decimal places, e.g. 25.) Contribution margin ratio %