wikiHow Calculating Inflation Practice Problems 1. The CPI for 2020 is 250 and the CPI for 2019 is 240. What is the inflation rate for 2020? 2. The CPI for 2021 is 350 and the CPI for 2020 is 325. What is the inflation rate for 2021? 3. The CPI for the first quarter of 2022 is 280 and the CPI for the first quarter of 2021 is 250. What is the inflation rate for the first quarter of 2022? 4. The CPI for December 2022 is 315 and the CPI for December 2021 is 300. What is the inflation rate for December 2022? 5. The CPI for the second quarter of 2023 is 290 and the CPI for the first quarter of 2023 is 280. What is the inflation rate for the second quarter of 2023? 6. The CPI for 2020 is 240 and the CPI for 2018 is 220. What is the inflation rate for the period from 2018 to 2020? 7. The CPI for 2021 is 335 and the CPI for 2019 is 310. What is the inflation rate for the period from 2019 to 2021? 8. The CPI for the third quarter of 2022 is 290 and the CPI for the third quarter of 2021 is 275. What is the inflation rate for the third quarter of 2022? 9. The CPI for September 2023 is 320 and the CPI for September 2022 is 300. What is the inflation rate for September 2023? 10. The CPI for the fourth quarter of 2024 is 325 and the CPI for the fourth quarter of 2023 is 315. What is the inflation rate for the fourth quarter of 2024? 11. The CPI for 2022 is 260 and the CPI for 2021 is 250. What is the inflation rate for 2022? 12. The CPI for 2023 is 280 and the CPI for 2020 is 240. What is the inflation rate for the period from 2020 to 2023? 13. The CPI for the second quarter of 2022 is 275 and the CPI for the second quarter of 2021 is 260. What is the inflation rate for the second quarter of 2022? 14. The CPI for December 2023 is 330 and the CPI for December 2022 is 310. What is the inflation rate for December 2023? 15. The CPI for the first quarter of 2024 is 290 and the CPI for the fourth quarter of 2023 is 285. What is the inflation rate for the first quarter of 2024? 16. The CPI for 2023 is 270 and the CPI for 2021 is 240. What is the inflation rate for the period from 2021 to 2023? 17. The CPI for 2024 is 290 and the CPI for 2023 is 280. What is the inflation rate for 2024? 18. The CPI for September 2024 is 310 and the CPI for September 2022 is 270. What is the inflation rate for the period from 2022 to 2024? 19. The CPI for the third quarter of 2023 is 280 and the CPI for the second quarter of 2023 is 270. What is the inflation rate for the third quarter of 2023? 20. The CPI for December 2024 is 335 and the CPI for December 2023 is 320. What is the inflation rate for December 2024? Note: These solutions assume that the inflation rate is calculated using the CPI and the formula Inflation Rate = (CPI in Current Year - CPI in Previous Year) / CPI in Previous Year x 100. In practice, inflation can be calculated using different measures and methods, depending on the data available and the purpose of the analysis. Page