A typical family on Lizard Island buys only mangoes and nuts. The cost of the CPI basket at base year price was $70 ($60 on nuts at $3/bag, and $10 on mangoes at $1 each). In the current year, mangoes are $1.50 each and nuts are $4/bag.

a. Calculate the CPI basket(Show your work)(2)

b. Calculate the CPI in the current year(Show your work)(2)

c. Calculate the inflation rate in the current year(Show your work)(3)