Hello, The solved math word problem goes like this, "A new computer costs $600 plus 7% sales tax. How much is the cost of the computer with added tax?" Solution given: The total cost of the computer with added tax = 600 x 1.07 = 642. I am used to solve this type of problem using a different method which involves two steps: First calculate the amount of sales tax. Second, add the tax amount to the price of the computer. Where does the 1 in the number 1.07 come from? :unsure: Your explanation will be greatly appreciated.