Respuesta :

1. The inflation rate decreased by 2 percentage points.                                      2. The inflation rate increased by 0.5 of a percentage point. 
3. The inflation rate increased from 4% to 5%. 
4. The inflation rate decreased from 1.9% to 1.5%.                                                   _______________________________________________________
your answer is, the inflation rate increased by 0.5 of a percentage point.