4. As a financial analyst you are asked to construct the DuPont system of analysis using the following financial data for Key Wahl Industries and determine which areas of the firm need further analysis. Key Financial Data Key Wahl Industries: Sales $4,500,000 Net profits after taxes 337,500 Total assets 6,750,000 Total liabilities 3,375,000 Industry Averages: Total asset turnover 0.71 Debt ratio 33.00% Financial leverage multiplier 1.50 Return on total assets 6.75% Return on equity 10.00% Net profit margin 9.50%