Question 822484
Finding the Percent of Change 
Jeans: $18; 33% Markup
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If the original price is 18 and you markup 33%
the selling price is 1.33*18 = $23.90
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If the original price was "x" and the marked up price
is $18, then 1.33x = 18
and x = $13.53
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Cheers,
Stan H.