Answer:
35.29%
Explanation:
Data provided in the question:
Market price of the used book = $85
Discounted price = $55
Now,
The percentage change in the book price will be calculated as:
=[tex]\frac{\textup{Market price - Discounted price}}{\textup{Market price}}\times100[/tex]
on substituting the respective values, we get
=[tex]\frac{85-55}{85}\times100[/tex]
= 35.29%
Hence,
the percentage change in the book price is 35.29%
