At the 2021 Fall Festival, a vendor offers a "festival special" on scarves. If you buy one scarf at the regular price of $25, you get a second scarf at a 30% discount, and a third scarf at half the regular price. If Emily buys three scarves using this offer, what percentage of the $75 regular price did she save? Let's think step by step and output the final answer within \boxed{}.
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