Answer:
exact actual growth rate of your purchasing power was 4.8%
Explanation:
given data
nominal rate of interest = 10%
inflation rate = 5%
solution
we get here exact actual growth rate that is express as
exact actual growth rate = [tex]\frac{1+rate\ of\ interest}{1+inflation\ rate} - 1[/tex] ..........................1
put here value and we will get
exact actual growth rate = [tex]\frac{1+0.10}{1+0.05} - 1[/tex]
exact actual growth rate = 4.8 %
so here exact actual growth rate of your purchasing power was 4.8%