Answer:
9%
Step-by-step explanation:
Real interest rate is the difference between nominal interest rate and inflation rate (i.e. real interest rate = Nominal interest rate - rate of inflation).
Therefore, Nominal interest rate would be calculated by adding real interest rate of 3% to an inflation rate of 6%, which gives 9%.
While the nominal interest rate is the actual interest rate paid to investors, the real interest rate is what gets to to the investor's pocket in terms of purchasing power.