For country A: CPI March 2021 is 523.5, and CPI April 2021 is
532.5. For country B: CPI March 2021 is 264.8, and CPI April 2021
is 266.8. We can say that
The inflation rate in April was 1.7% in country A and 0.8% in
country B.
In April country A has a higher inflation rate than country B
because the CPI increased by 9 points for country A and CPI
increased by 2 points in country B.
The overall price level in country A is approximately twice the
overall price level in country B, because country A's CPI is almost
two times the CPI of country B.
In both March and April country A has a higher inflation rate
than country B because for both months CPI is country A is higher
than the CPI in country B.