Question

3.1.PS-12

Find the sales tax. Then find the total cost of the item.
Sales Tax
Selling Price Rate of Sales Tax Sales Tax
$80.00
4%
?
The sales tax is $

Answer 1

well, we simply add 4% to the 80 bucks, is all

`\begin{array}c \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{4\% of 80}}{\left( \cfrac{4}{100} \right)80}\implies 3.2~\hfill \underset{total~cost}{\stackrel{80~~ + ~~3.2}{\text{\LARGE 83.2}}}`