Selected Current Year Company Information Follows Calculate the Following Company Ratios:
(A) Profit Margin

Selected current year company information follows:
$\begin{array}{|l|r|}\hline \text { Net income } & \$ 325,000 \\\hline \text { Net sales } & 4,700,000 \\\hline \text { Total liabilities, beginning-year } & 550,000 \\\hline \text { Total liabilities, end-of-year } & 530,000 \\\hline \text { Total stockholder's' equity, beginning-year } & 760,000 \\\hline \text { Total stockholder's' equity, end-of-year } & 745,000 \\\hline\end{array}$ Calculate the following company ratios:
(a) Profit margin.
(b) Total asset turnover.
(c) Return on total assets.
(d) Return on common stockholders' equity (assume the company has no preferred stock).