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The cost to a store for a pair of earrings is $20. The mark-up is 15%. Find the selling price. ​
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The cost to a store for a pair of earrings is $20. The mark-up is 15%. Find the selling price. ​

User Jayden Meyer
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\begin{array}c \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{15\% of 20}}{\left( \cfrac{15}{100} \right)20}\implies 3~\hfill \underset{selling~price}{\stackrel{20+3}{23}}

User Shehzad Osama
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