Answer:
a) 100
b) 136.09
c) 36.09%
Step-by-step explanation:
You should do:
year2010 = 2,000*3+200*80+1,000*0.10
year2011 = 2,100*3.50+250*90+1,500*0.15
inflation: (year2011/year2010 - 1)*100 = 36.09%
CPI2010 = year2010/year2010*100 = 100
CPI2011 = year2011/year2010*100 = 136.09