Blossom Medical manufactures hospital beds and other institutional furniture. The companys comparative balance sheet and income statement for 2019 and 2020 follow.

Blossom Medical Comparative Balance Sheet As of December 31
		2020		2019
Assets
Current assets
Cash		$366,000		$417,500
Accounts receivable, net		1,038,000		776,400
Inventory		733,000		681,000
Other current assets		381,400		247,000
Total current assets		2,518,400		2,121,900
Property, plant, & equipment, net		8,710,615		8,440,030
Total assets		$11,229,015		$10,561,930
Liabilities and Stockholders Equity
Current liabilities		$3,169,000		$2,846,000
Long-term debt		3,702,600		3,892,600
Total liabilities		6,871,600		6,738,600
Preferred stock, $5 par value		59,000		59,000
Common stock, $0.25 par value		104,700		103,800
Retained earnings		4,193,715		3,660,530
Total stockholders equity		4,357,415		3,823,330
Total liabilities and stockholders equity		$11,229,015		$10,561,930

Blossom Medical Comparative Income Statement and Statement of Retained Earnings For the Year
		2020		2019
Sales revenue (all on account)		$10,177,300		$9,614,000
Cost of goods sold		5,613,550		5,298,750
Gross profit		4,563,750		4,315,250
Operating expenses		2,840,300		2,634,150
Net operating income		1,723,450		1,681,100
Interest expense		300,400		308,700
Net income before taxes		1,423,050		1,372,400
Income taxes (30%)		426,915		411,720
Net income		$996,135		$960,680
Dividends paid
Preferred dividends		29,450		29,450
Common dividends		433,450		413,000
Total dividends paid		462,900		442,450
Net income retained		533,185		518,230
Retained earnings, beginning of year		3,660,530		3,142,300
Retained earnings, end of year		$4,193,715		$3,660,530

Calculate the following profitability ratios for 2020. (Round answers to 1 decimal place, e.g. 50.1%.)

a.	Gross margin percentage		%
b.	Return on assets		%
c.	Return on common stockholders equity		%