The Consumer Price Index in 2018 was 251. In 2019, the CPI rose to 257. Calculate the inflation rate from 2018 to 2019. Round your answer to the nearest tenth of a percent.(1 point)

Question

Responses

2.4%
2.4 percent

6%
6 percent

−2.3%
negative 2.3 percent

102.4%
102.4 percent

Answer 1

To calculate the inflation rate from 2018 to 2019 using the Consumer Price Index (CPI), you can use the following formula:

\[ \text{Inflation Rate} = \left( \frac{\text{CPI in 2019} - \text{CPI in 2018}}{\text{CPI in 2018}} \right) \times 100 \]

Plugging in the values:

CPI in 2018 = 251
CPI in 2019 = 257

\[ \text{Inflation Rate} = \left( \frac{257 - 251}{251} \right) \times 100 \] \[ = \left( \frac{6}{251} \right) \times 100 \approx 2.39% \]

Rounding to the nearest tenth of a percent, the inflation rate is approximately 2.4%.

The correct response is: 2.4%