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Analyzng Inventory for Two Retail Grocery Companes Required a. Calculate gross profit margin for each year for both companies. Note: Round percentage to one decimal place (for example, enter 6.7% for 6.6555% ). b. Determine the common-size inventory for each year for both companies. Note: Round percentage to one decimal place (for example, enter 6.7% for 6.6555% ). c. Compute inventory turnover and days average inventory outstanding for 2018 . Note: Do not round until your final answer; round your final answer to one decimal place (for example, enter 6.8 for 6.77555 )