Making Business Decisions: Analyzing Wal-Mart's Gross Profit Ratio companies' Form 10-Ks, amounts in millions of dollars): *Described as net sales by Wal-Mart. Required: 1. Calculate the gross profit ratios for Wal-Mart and Target for 2016 and 2015 . Enter the amounts as a percent, rounded to one decimal place. 2. Which company appears to be performing better? 3. What factors might cause difference in the gross profit of two companies operating in the same industry