A Consumer Expenditure Survey in the city of Firestorm shows that people consume only firecrackers and bandages. In 2010, the year of the survey and also the reference base year, the average household spent $100 on firecrackers and $10 on bandages. The price of a firecracker in 2000 was $2, and the price of bandages was $1 a pack. In the current year, 2011, the price of a firecracker is $3 and the price of bandages is $1.25 a pack. Calculate:
a. The CPI basket.
b. The percentage of a household's budget spent on firecrackers in the base year.
c. The CPI in 2011.
d. The inflation rate in 2011.