Gabby uses a calculator to figure out the total cost of a $28 backpack. Including sales tax, the total is $30.17. What is the sales tax percentage?
Write your answer as a decimal using a percent sign (%). For example, 0.5% or 12.7%.
To find the sales tax percentage, we need to find the amount of sales tax first. The total cost of the backpack is $30.17, and the cost of the backpack alone is $28. Therefore, the sales tax is $30.17 - $28 = $2.17.
To find the sales tax percentage, we divide the sales tax amount by the cost of the backpack: $2.17 / $28 = 0.0775
Converting this decimal to a percentage, we get 7.75%.
Therefore, the sales tax percentage is 7.75%.