Liz Raiborn Inc. has the following financial results for the years 2019 through 2021 for its three regional divisions:

Required

Calculate return on sales (ROS), asset turnover (AT), and return on investment (ROI) for each division and also for the firm as a whole for each of the three years 2019, 2020, and 2021.

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2019 2020 2021 Revenue $14,900 6,700 12,400 $22,000 $26,000 7,200 13,300 Southwest Midwest 7,000 Southeast 13,000 $42,000 $34,000 $46,500 Total Net Operating Income Southwest $ 1,100 1,250 1,000 $ 1,200 $ 1,350 1,550 1,600 Midwest 1,600 1,200 Southeast $ 3,350 $ 4,000 $ 4,500 Total Average Total Assets $14,000 4,700 5,300 $24,000 $14,200 $16,800 4,200 5,600 Southwest Midwest 4,200 5,600 Southeast $24,000 $26,600 Total