Question

David buys last year's best-selling novel, in hardcover, for $13.30. This is with a 30% discount from the original price. What was theoriginal price of the novel?

Answer 1

Since the price paid got 30% discount from the original price, so this price represents 70% of the original price.

Using the variable x to represent the original price, we can write the following equation and solve it for x:

`\begin{gathered} 13.3=70\text{\% of x} \\ 13.3=(70)/(100)\cdot x \\ 13.3=0.7\cdot x \\ x=(13.3)/(0.7) \\ x=19 \end{gathered}`

Therefore the original price is $19.