Excerpts from TPX Company's December 31, 2018 and 2017, financial statements are presented below:

	2018	2017
Accounts receivable	$80,000	$72,000
Inventory	84,000	70,000
Net sales	400,000	372,000
Cost of goods sold	254,000	216,000
Total assets	850,000	810,000
Total stockholders equity	500,000	450,000
Net income	75,000	56,000

TPX Company's 2018 profit margin is (rounded to one decimal place):

18.8%.

9.0%.

19.4%.

15.1%.