Suppose the central bank wants to reduce inflation from 15% to 10% so that inflation rate equals to 5% and that too within a period of 1 year. The equation Өt-Өt-1=-ἀ(ut-un). states that to reduce the inflation rate to 5% requires one year of unemployment at 10% above the natural rate. The R.H.S equals to –5% and the inflation rate decreases by 10% within a year. Following this phenomenon to reduce inflation over 5 years requires 5 years of unemployment at 1%i.e.(10/5) above the natural rate, and so on. We can note that in the above phenomenon the number of point-years of excess unemployment required to decrease inflation is the same i.e. 5%.