Final answer:
The real interest rate is calculated by subtracting the rate of inflation from the nominal interest rate, giving a result of 0% when both are 1%.
Step-by-step explanation:
The real interest rate can be calculated by subtracting the rate of inflation from the nominal interest rate. In this scenario, if the nominal interest rate is 1% and the rate of inflation is also 1%, the real interest rate would be:
Real interest rate = Nominal interest rate - Inflation rate
= 1% - 1% = 0%
Therefore, the real interest rate for a savings account that has a nominal interest rate of 1% when the rate of inflation is also 1% would be 0%, which corresponds to option b. 0%