Sales tax and purchase price: suppose the sales tax rate in a certain state is is 8% how much sales tax is charged on a new car if the purchase price is $11,900?

To calculate the sales tax of an $11,900 purchase, we simply multiply the purchase prices by the sales tax rate.

8% is 8 parts of 100, which can be shown as a fraction with 8/100 or as a decimal with .08

Let's use the decimal in this case:

Sales Tax = purchase price x sales tax rate
Sales tax = 11,900 x .08
Sales tax = $952

So if the car was purchased at $11,900 in a state with an 8% sales tax rate, the sales tax would be $952 bringing the total cost of the car up to $12,852.