Answer:
ROI doubles
Explanation:
The formula to compute the return on investment is shown below:
Return on investment = (Annual income) ÷ (Initial investment)
If we take the first case,
Annual income = $100
And, the investment = $500
So, the ROI = $100 ÷ $500 = 0.2
If the annual income doubles i.e $200
So, the ROI = $200 ÷ $500 = 0.4
So in the given case, the ROI also doubles