Answer:
18%
Explanation:
The computation of the average rate of return is shown below:
The average of annual income is
= $936,000 ÷ 8 years
= $117,000
And, the average investment is
= ($1,200,000 + $100,000) ÷ 2
= $650,000
Now the average rate of return is
= $117,000 ÷ $650,000
= 18%