The Greenback Store's cost structure is dominated by variable costs with a contribution margin ratio of 0.40 and fixed costs of $46,200. Every dollar of sales contributes 40 cents toward fixed costs and profit. The cost structure of a competitor, One-Mart, is dominated by fixed costs with a higher contribution margin ratio of 0.80 and fixed costs of $354,200. Every dollar of sales contributes 80 cents toward fixed costs and profit. Both companies have sales of $770,000 for the month. Required: a. Compare the two companies' cost structures. b. Suppose that both companies experience a 10 percent increase in sales volume. By how much would each company's profits increase? Complete this question by entering your answers in the tabs below. Required A Required B Compare the two companies' cost structures. GREENBACK STORE Amount Percentage ONE-MART Amount Percentage I Sales Variable cost Contribution margin Fixed costs Operating profit % % 1% Required A Required B >