Calculate the most recent operating margin, profit margin, return on assets (ROA), return on equity (ROE), and return on invested capital (ROIC) for uber and lfyt. What can you say about these ratios? Operating margin= EBIT/Sales Profit margin= Net income/Sales ROA= Net income/Total assets ROE= Net income/Common equity Or ROE= Return on assets/ (1-Debt/Asset) ROIC= EBIT(1 T)/Total invested capital