8fuzzyreindeers
8fuzzyreindeers 8fuzzyreindeers
  • 13-03-2018
  • Mathematics
contestada

The sales tax on a $250 computer is 17.50. find the sales tax rate.

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jdoe0001 jdoe0001
  • 13-03-2018
if we take 250 to be the 100%, what is 17.50 off of it in percentage?

[tex]\bf \begin{array}{ccll} amount&\%\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 250&100\\ 17.50&t \end{array}\implies \cfrac{250}{17.50}=\cfrac{100}{t}\implies t=\cfrac{17.50\cdot 100}{250}[/tex]
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