In 1983, a can of house paint cost $16.35. In 2000, a can of house paint cost $28.94, and in 2005, a can of house paint cost $32.54. What is the difference in CPI between 2000 and 2005?

Using 1983 as the base year, calculate each CPI as the can’s price divided by the 1983 price, then multiply by 100. The difference is (32.54 − 28.94) ÷ 16.35 × 100 ≈ 22. So the CPI difference is 22, choice B.

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