Sheridan Limited competes in the fast food industry with Concord Limited. Sheridan underwent a major expansion in 2021, borrowing a large amount of money and acquiring a small competitor. The acquisition doubled the number of restaurants that Sheridan has. Concord, on the other hand, took a more conservative approach and did not buy any new assets, focusing instead on making existing operations more efficient. Data for the two companies are provided below (in thousands of dollars):

			2021		2020		2019
Sheridan
	Total assets		$2,200		$1,072		$900
	Sales		2,975		1,630		1,600
	Net income		358		150		140
Concord
	Total assets		778		819		900
	Sales		1,788		1,530		2,000
	Net income		170		213		210

(a) Calculate the (1) profit margin, (2) asset turnover, and (3) return on asset ratios for each company in 2020 and 2021.