Question

An electronics store marks up all its merchandise 45%. Find the retail price of a TV that cost the store $200.

Answer 1

well, we know the TV cost 200 bucks, now if we just bump it up by 45%, that'd do it.

`\begin{array} \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{45\% of 200}}{\left( \cfrac{45}{100} \right)200}\implies 90~\hfill \underset{retail~price}{\stackrel{200~~ + ~~90}{\text{\LARGE 290}}}`