I need help, the yellow boxes are the areas needing explained.

X X Net Sales Total Assets Net Income Equity Net Income Net Sales Return on Equity = Total Assets Total Equity For the corporations listed below, calculate the return on equity for the missing years. Record your answers in the space provided. 1/31/12 1/31/11 1/31/13 Wal-Mart Profit Margin Asset Turnover Equity Multiplier (A/E) Return on Equity 3.62% 2.31 2.66 3.68% 2.31 2.71 23.07% 3.78% 2.33 2.64 23.28% 12/31/12 12/31/11 12/31/10 Harley Davidson Profit Margin Asset Turnover Equity Multiplier (A/E) Return on Equity 11.18% 0.61 3.59 24.39% 11.28% 0.55 4.00 3.02% 0.52 4.27 6.64% 12/31/12 12/31/11 12/31/10 PPL Corporation Profit Margin Asset Turnover Equity Multiplier (A/E) Return on Equity 12.42% 0.28 4.16 14.56% 11.74% 0.30 3.94 13.81% 11.01% 0.26 4.00 11.43% 9/28/13 9/28/12 9/28/11 Apple Profit Margin Asset Turnover Equity Multiplier (A/E) Return on Equity 21.67% 0.83 1.68 29.98% 26.67% 0.89 1.49 35.30% 23.95% 0.93 1.52 In 2013, Wal-Mart generated In 2013, Apple generated in profit for every dollar of shareholder equity. in profit for every dollar of shareholder equity