Answer:
the rate of return on Karen investment is 10%
Step-by-step explanation:
Given that
Bought price = P = $78500
Sale price = S =$850,000
Time priod = n = 25 years (1980 to 2005)
Based on the above information
The Rate of return is
= (S ÷ P)^(1 ÷ n) - 1
= ($850,000 ÷ $78,500)^(1 ÷ 25) - 1
= 0.099973
= 10.00%
hence, the rate of return on Karen investment is 10%
We simply applied the above formula