Question

A hardware store uses a 42.5% markup for tools. If a pair of needle-nose pliers costs the store $8.29, what is the selling price of the pliers?

Answer 1

`\begin{array}ll \cline{1-1} \textit{\textit{\LARGE a}\% of \textit{\LARGE b}}\\ \cline{1-1} \\ \left( \cfrac{\textit{\LARGE a}}{100} \right)\cdot \textit{\LARGE b} \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{42.5\% of 8.29}}{\left( \cfrac{42.5}{100} \right)8.29} ~~ \approx ~~ 3.52~\hfill~\underset{ \textit{selling price} }{\stackrel{ 8.29~~ + ~~3.52 }{\approx\text{\LARGE 11.81}}}`