Sheffield Corporation and Grouper Corporation, two companies of roughly the same size, are both involved in the manufacture of shoe-tracing devices. Each company depreciates its plant assets using the straight-line approach. An investigation of their financial statements reveals the information shown below. Net income Sales revenue Total assets (average) Plant assets (average) Intangible assets (goodwill) Sheffield Corp. $218.400 1,092.000 3.360.000 285,000 325.100 Grouper Corp. $ 280,920 1,170,500 3,090.120 1,898,000 0 (a) For each company, calculate these values: (Round answers to 3 decimal places, eg. 6.250% or 17.540.) Sheffield Corp. Grouper Corp. (1) Return on assets % % (2) Profit margin % % (3) Asset turnover times times