the inflation rate is calculated as selected answer will be automatically saved. for keyboard navigation, press up/down arrow keys to select an answer. a the cost of a basket of goods in the current year minus the cost of the basket in the base year x 100. b the cpi in one year minus the cpi in another year x 100. c the cpi in year 1 divided by the cpi in the base year x 100. d none of the above.