The following sales and cost data (in thousands) are for two companies in the transportation industry: Company A Company B Amount Percent of Sales Amount Percent of Sales Sales $ 100,000 100 % $ 100,000 100 % Variable costs 50,000 50 30,000 30 Contribution margin $ 50,000 50 % $ 70,000 70 % Fixed costs 15,000 40,000 Operating profit $ 35,000 $ 30,000 Required: 1-a. Calculate the degree of operating leverage (DOL) for each company. 1-b. If sales increase from the present level, which company benefits more? 2. Assume that sales rise 10% in the next year but that everything else remains constant. Calculate the percentage increase in profit for each company.