Answer:
ROI 87.5%
Explanation:
Return on Investment = return /investment
Total return
50,000 perating income + 20,000 residual income = 70,000 income
The asset could been adquire on lease or through liabilities, this is not investment. The investmetn made is the one done by the shareholders.
Stock Holders equity = investment = 80,000
The shareholders invest this amount to generate
70,000 dollars of return
ROI 70,000/80,000 = 87.5%