Question

Chen paid $36 for some books after a 25% discount was applied. What was the original price of the books?

Answer 1

`$48`

Explanation:

Since a `25%` discount was applied, and he paid `$36` for that, that must mean that he paid for `100%-25%=75%` of the original price.

Let the price be `$x`.

We know that

`75%x=36`

`3/4x=36`

`x=36*4/3=48`

So, the original price was `$48`.