Answer:
1. Firm's average total assets = Net Income/ROI = $610,000*0.11 / 0.17 = $394,705.88
2. Sales = Assets turnover ratio * Average total assets = 1.40*920,000 = $1,288,000
Margin = Net Income / Sales = $72,000/$1,288,000 = 0.06
ROI = Net Income / Average Total Assets = $72,000/920,000 = 0.078
3. Average Total Assets = Net Income / ROI = $136,000/23.40% = 136,000/0.2340 = $581,196.58
Sales = Assets turnover ratio * Average total assets= 2.01*$581,196.58 = $1,168,205.12
Margin = Net Income / Sales = $136,000/$1,168,205.12 = 0.1164