Exercise 6-21 Performing ratio analysis using real-world data LO 6-11 American Greetings Corporation manufactures and sells greeting cards and related items such as gift wrapping paper. CSX Corporation is one of the largest railway networks in the nation. The following data were taken from one of the companies' December 25, 2015, annual report and from the other's February 28, 2015, annual report. Revealing which data relate to which company was intentionally omitted. For one company, the dollar amounts are in thousands, while for the other they are in millions 8.900 740 Company 2 $1.903.ee 57.39 Sales Depreciation costs Net earnings Current assets Property, plant, and equipment Total assets 3, 131 28.665 281, 405 Required a. Calculate depreciation costs as a percentage of sales for each company (Round your answers to 2 decimal places i.e., 0.0123 to be considered as 1.23%) b. Calculate property, plant, and equipment as a percentage of total assets for each company. (Round your answers to 2 decimal places le., 0.0123 to be considered as 1.23%.) c. Which company appears to be using its assets most efficiently Company 1 Company 2 a Depreciation based on sales b. Percentage of plant in total assets c Managing its assets more efficiently