The income statement for stretch-tape corporation reports net sales of $540,000 and net income of $65,700. average total assets for the year are $900,000. stockholders' equity at the beginning of the year was $600,000, and $30,000 was paid to stockholders as dividends during the year. there were no other stockholders' equity transactions that occurred during the year. required: calculate the return on assets, profit margin, asset turnover, and return on equity ratios.