Represent the dress price using d.
$23
Savings were 0.18d = $23. Dividing both sides by 0.18, we get d = -------
0.18
= $127.78.
Check: What is 18% of $127.78? 0.18($127.78) = $23.
Thus, the original price was $127.78, the savings $23, and the price paid $104.78.