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<?xml version="1.0" encoding="utf-8"?>
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<page xmlns="http://projectmallard.org/1.0/" type="guide" id="percentage">
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<link type="guide" xref="index#equation"/>
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<title>Percentages</title>
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Percentages are calculated using the % symbol.
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When added or subtracted the percentage symbol resolves to one percent of the value being added or subtracted from.
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The following equation calculates the price of a $140 item with 15% tax (140 + (15÷100)×140).
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In all other cases the percentage symbol resolves to a fraction out of 100.
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The following equation calculates one quarter of 80 apples ((25÷100)×80).