Katie uses a calculator to figure out the total cost of a $4,400 arcade machine. Including sales tax, the total is $4,730. What is the sales tax percentage?
Write your answer as a decimal using a percent sign (%). For example, 0.5% or 12.7%.
The sales tax is calculated by subtracting the original price of the arcade machine from the total cost, and then dividing that amount by the original price.
Sales tax = (Total cost - Original price) / Original price
Sales tax = ($4,730 - $4,400) / $4,400
Sales tax = $330 / $4,400
Sales tax = 0.075
Converting this decimal to a percentage, the sales tax is 7.5%.
Therefore, the sales tax percentage is 7.5%.