if rent is 10% of all spending, aggregate inflation stays flat:
.1*1.9 + .9*.9 = .19+.81 = 1
but someone spending 30% on rent sees a 20% personal inflation rate:
.3*1.9 + .7*.9 = .57+.63 = 1.2
if rent is 10% of all spending, aggregate inflation stays flat:
.1*1.9 + .9*.9 = .19+.81 = 1
but someone spending 30% on rent sees a 20% personal inflation rate:
.3*1.9 + .7*.9 = .57+.63 = 1.2