Selected comparative statement data for Tyrone Company are presented below. All balance sheet data are as of December 31.

		2020		2019
Net sales		$1,160,000		$1,131,000
Cost of goods sold		686,000		639,000
Interest expense		15,000		10,000
Net income		150,800		140,000
Accounts receivable		141,000		117,000
Inventory		99,000		94,000
Total assets		760,000		690,000
Preferred stock (6%)		201,000		201,000
Total stockholders equity		618,000		529,000

1. Compute the profit margin for 2020. (Round answer to 1 decimal place, e.g. 15.2%.) 2. Compute the asset turnover for 2020. (Round answer to 1 decimal place, e.g. 15.2.) 3. Compute the return on assets for 2020. (Round answer to 1 decimal place, e.g. 15.2%.) 4. Compute the return on common stockholders equity for 2020. (Round answer to 1 decimal place, e.g. 15.2%.