Roberts, Inc., has the following financial results for the years 2010 through 2012 for its three regional divisions:

Required

Calculate return on sales (ROS), asset turnover (AT) and return on investment (ROI) for each division and for the firm as a whole for each of the three years 2010, 2011, and2012.

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2010 2011 2012 Revenue Southwest $15,000 S22,000 s26,000 7,200 7,000 Midwest 6,600 Southeast 12,500 12,800 13,300 Total $34,100 S42,000 S46,300 Net Operating Income $ 1,100| S 1,200 S 1,400 Southwest Midwest 1,500 1,250 1,550 1,600 Southeast 900 1,200 $ 3,250 Total S 3,900 S 4,560 Average Total Assets Southwest $14,000 S14,000 $16,500 Midwest 4,200 4,200 4,200 Southeast 5,300 5,600 5,600 Total $23,500 $23,800 $26,300