Answer:
11%
Step-by-step explanation:
Fisher equation establishes relationship between real interest rate, nominal rate and real rate.
Real interest rate = Nominal interest rate - inflation.
Here, 8% interest rate is the nominal interest rate. As inflation is zero, real interest rate is 8% only.
Now, if inflation rate of 3% is expected, then nominal interest rate should account for inflation as well to maintain real rate of 8%.
Substitute the values in the above equation:
8% = Nominal interest rate - 3%
Nominal rate = 8% + 3%
= 11%
So, they should set interest rate as 11% in case of inflation of 3%