Answer
Find out the what is the percentage of the tax .
To proof
As given
A large bottle of dragon breath mouthwash cost 5.00 dollars before tax and 5.30 dollars after tax .
Tax = cost after tax - cost before tax
= 5.30 - 5.00
= $ .30
Formula
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Now
Tax = $ .30
Total cost = $5.00
put in the formula
\(Tax\ percentage = \frac{.30\times100}{5.00}\)
Tax percentage = 6%
percentage of the tax is 6% .
Hence proved
