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OpenStudy (anonymous):
A music store buys compact discs for $12 each and sells them for $15 each. What is the percent of markup on these compact discs?
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OpenStudy (jdoe0001):
if $12 is the regular price, the 100% price what's $15? well, the corresponding figures are, 12 to 100% and 15 to who knows or \(\bf \cfrac{12}{100}=\cfrac{15}{x} \) solve for "x"
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