Final answer:
To find the percent sales tax, rewrite the formula to solve for the rate of sales tax by dividing the amount of sales tax by the price. For example, if the price is $150.00 and the amount of sales tax is $15.00, the rate of sales tax would be 10%.
Step-by-step explanation:
To find the cost of sales tax, you need to rewrite the formula to solve for the sales tax percent. The formula for the amount of sales tax is:
Amount of sales tax = price × rate of sales tax
To solve for the percent sales tax, you can rearrange the formula:
Rate of sales tax = Amount of sales tax / price
For example, if the price is $150.00 and the amount of sales tax is $15.00, the rate of sales tax would be 15/150 = 0.10 or 10%.