The Greenback Store's cost structure is dominated by variable costs with a contribution margin ratio of 0.45 and fixed costs of $119.700. Every dollar of sales contributes 45 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 $319,200. Every dollar of sales contributes 80 cents toward fixed costs and profit. Both companies have sales of $570,000 for the month, Required: a. Compare the two companies' cost structures b. Suppose that both companies experience a 15 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 Compare the two companies cost structures, GREENBACK STORE Amount Percentage ONE-MART Amount Porcentage Sales Vanable cost Contribution margin (Fond costs Operating profil Required >