Answer:
real rate of return = 8.8%
Explanation:
given data
nominal rate of return = 12 %
time = 20 year
inflation rate = 3.2%
solution
we will apply here Nominal rate of return to get real rate of return that is
nominal rate of return = Real rate of return + Inflation rate ......................1
put here value and we will get real rate of return
real rate of return = nominal rate of return - inflation rate
real rate of return = 12% - 3.2%
real rate of return = 8.8%