Based on the nominal interest rate and the real interest rate, the inflation rate must be 10%.
The inflation rate is the difference between the nominal rate and the real interest rate.
It can be found as:
= Nominal rate - Real interest rate
Solving gives:
= 18% - 8%
= 10%
In conclusion, the inflation rate is 10%.
Find out more on inflation rates at https://brainly.com/question/25877453.