If sales are $807,000, variable costs are 68% of sales, and income from operations is $262,000, what is the contribution margin ratio? a. 32% b. 64% c. 68% d. 36% If sales are $807,000, variable costs are 68% of sales, and income from operations is $262,000, what is the contribution margin ratio? a. 32% b. 64% c. 68% d. 36%