Answer:
$425.50
Step-by-step explanation:
The relationship between regular price and sale price is ...
sale price = regular price - 0.40 · regular pric
= regular price · (1 - 0.40) = 0.60 · regular price
Dividing by 0.60, we find ...
sale price / 0.60 = regular price
$255.30/0.60 = regular price = $425.50