Answer:
$420
Explanation:
Let the regular price be represented by r. Then:
(1.00 - 0.71)r = $121.80, or
0.29r = $121.80.
Solving for r by dividing both sides of this equatin by 0.29, we get:
r = $121.80 / 0.29 = $420.
The regular price of the suit was $420.