A full-length mirror cost $144.99 when the CPI was 163. What will a full-length mirror cost when the CPI is 211, to the nearest cent?

Adjust the price in proportion to the CPI: $144.99 × (211 ÷ 163) = $187.686… . Rounded to the nearest cent, that is $187.69. Choice C, $187.68, is the closest listed amount, but it is one cent below the result; the choices appear to contain a rounding error.

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