Answer :
The real health care expenditure per capita in 2022, expressed in 2015 prices, was $2,300 after adjusting for inflation as indicated by the price index change from 100 in 2015 to 200 in 2022.
To calculate the real health care expenditure in 2022 using 2015 prices, we can adjust the nominal expenditure in 2022 by the change in the price index from 2015 to 2022. The price index in 2015 was 100, and in 2022 it rose to 200. This means that prices have doubled over this period. To get the real expenditure, we need to deflate the 2022 figure by the price index to account for inflation. The formula for calculating the real expenditure is:
Real Expenditure in 2022 = Nominal Expenditure in 2022 / (Price Index in 2022 / Price Index in 2015)
Plugging in the values gives us:
Real Expenditure in 2022 = $4,600 / (200/100) = $2,300
Therefore, the real health care expenditure per capita in 2022, expressed in 2015 prices, was $2,300.