Answer:
See below
Explanation:
1. Compute the margin
Margin = Net operating income / Sales
Margin = $600,000 / $7,500,000
Margin = 0.08 or 8%
2. Compute the turnover
Turnover = Sales / Average operating assets
Turnover = 7,500,000 / 5,000,000
Turnover = 1.5
3. Compute the return on investment
Return on investment = Margin × Turnover
Return on investment = 8% × 1.5
Return on investment = 12%