Answer:
Margin=Net operating income/Sales
turnover=Sales/Average operating assets
ROI=Net operating income/Average operating assets
A B C
Sales 600,000 500,000 2,000,000
Net operating income 84000 70000 70,000
Average operating assets 300,000 1,000,000 1,000,000
Margin 14% 14% 3.5%
Turnover 2 0.5 2
ROI 28% 7% 7%
Explanation: