Question

After a 20% discount and 5% sales tax, a book costs $16. 80. What was the original price of the book?

Answer 1

Explanation:

To solve this problem, we can work backwards from the final price of the book.

First, we can calculate the price of the book before sales tax was added. To do this, we can divide the final price by 1.05 (since 5% sales tax was added).

$16.80 / 1.05 = $16

Next, we can calculate the price of the book before the 20% discount was applied. To do this, we can divide the price before sales tax by 0.8 (since 20% is equivalent to 0.2 as a decimal).

$16 / 0.8 = $20

Therefore, the original price of the book was $20.