Answer:
20%
Step-by-step explanation:
The nominal interest rate is the interest rate that you receive for a deposit or an investment without considering any type of adjustment due to inflation.
nominal interest rate = [(future value / present value) - 1] x 100 = [($1,200 / $1,000) - 1] x 100 = 0.2 x 100 = 20%
If you want to calculate the real interest rate, you must adjust your nominal interest rate by the period's inflation rate.