The price of a new textbook was $60 in one year and $75 two years later.Over the same period,the price of a used copy of the text rose from $25 to $37.50.Over the two years,the relative price of a new textbook

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The relative price of a new textbook compared to a used one initially is $60/$25 = 2.4. Two years later, it is $75/$37.50 = 2. This shows a decrease from 2.4 to 2.0, not an increase or a change in the percentage increase of the price of new or used textbooks alone.

The Price of a New Textbook Was $60 in One