Mathematics, 16.09.2019 01:20 leewalker1341
Iwas charged $ 1.20 for sales tax when i spent $20. how much sales tax would i pay on a purchase of $50
Answers: 1
![\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} 20&100\\ 1.20&x \end{array}\implies \cfrac{20}{1.20}=\cfrac{100}{x}\implies 20x=120 \\\\\\ x=\cfrac{120}{20}\implies x=6\qquad \impliedby \textit{so then the tax applied is 6\%} \\\\[-0.35em] ~\dotfill\\\\ \begin{array}{|c|ll} \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{6\% of 50}}{\left( \cfrac{6}{100} \right)50}\implies 3](/tpl/images/0231/7367/5853d.png)
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Iwas charged $ 1.20 for sales tax when i spent $20. how much sales tax would i pay on a purchase of...
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