Selected Data from the Florida Fruit Company Are Presented Below

Selected data from the Florida Fruit Company are presented below: $\begin{array}{lr}\text { Total assets } & \$ 1,500,000 \\\text { Average total assets } & 1,850,000 \\\text { Net income } & 175,000 \\\text { Net sales } & 1,300,000 \\\text { Average common stockholders' equity } & 1,000,000 \\\text { Net cash provided by operating activities } & 275,000\end{array}$ Instructions
Assuming that no dividends were declared or paid during the period, calculate the following profitability ratios from the above information:
1. Profit margin
2. Asset turnover
3. Return on assets
4. Return on common stockholders' equity