Final answer:
The inflation rate in 2018 would be 2.39%.
Step-by-step explanation:
To calculate the inflation rate, we use the formula:
Inflation rate = ((CPI2 - CPI1) / CPI1) * 100%
Given that the CPI in 2017 was 246.2 and the CPI in 2018 was 252.1, we can substitute the values into the formula:
Inflation rate = ((252.1 - 246.2) / 246.2) * 100% = 2.39%
Therefore, the inflation rate in 2018 would be 2.39%.