Explanation:
Let the regular price of the dress = y
20% off sale = 0.20
Discounted price= 0.2 × y
Rachel saved = $45
This means after removing the discount from the regular price, she saved $45
45 = regular price - Disounted price
45 = y - 0.2y
45 = 0.8y
divide both sides by 0.8:
45/0.8 = 0.8y/0.8
y =56.25
The regular price
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