The balance sheets for Plasma Screens Corporation and additional information are provided below.

PLASMA SCREENS CORPORATION Balance Sheets December 31, 2021 and 2020
	2021				2020
Assets
Current assets:
Cash	$	215,040			$	128,000
Accounts receivable		94,000				100,000
Inventory		103,000				88,000
Investments		4,800				2,800
Long-term assets:
Land		560,000				560,000
Equipment		870,000				750,000
Less: Accumulated depreciation		(508,000	)			(348,000	)
Total assets	$	1,338,840			$	1,280,800
Liabilities and Stockholders' Equity
Current liabilities:
Accounts payable	$	106,600			$	93,000
Interest payable		7,000				12,800
Income tax payable		9,000				5,800
Long-term liabilities:
Notes payable		120,000				240,000
Stockholders' equity:
Common stock		780,000				780,000
Retained earnings		316,240				149,200
Total liabilities and stockholders' equity	$	1,338,840			$	1,280,800

Additional information for 2021:

Net income is $167,040.

Sales on account are $1,813,900.

Cost of goods sold is $1,346,550.

Required: 1. Calculate the following profitability ratios for 2021: (Round your answers to 1 decimal place.)

a. Gross profit ratio

b. Return on assets

c. Profit margin

d. Asset turn over

e. Return on equity