#### Explanation:

Let the original price be $x$ so all of it is: 100%x

But % is a unit of measurement worth $\frac{1}{100}$ giving $\frac{100}{100} x$

The current price is $\frac{100}{100} x - \frac{15}{100} x = \frac{85}{100} x$

We are told that this is $204 giving 85/100x=$204

Multiply both sides by $\frac{100}{85}$ giving:

x=$204xx100/85 x=$240