Answer:
The real interest rate is 0%
Explanation:
To calculate the real interest rate, we can use the following formula:
Real Interest Rate = [(1+nominal interest rate)/(1-+inflation rate)]-1
Now, we plug the amounts into the formula:
Real Interest Rate = [(1+0.09)/(1+0.09)]-1
               =[1.09/1.09]-1
               =1-1
               =0
Thus, the Real Interst Rate is equal to 0%