A new shirt costs $40 before tax. If sales tax is 6.8 percent, what is the final cost of the shirt?

Answer 1

The sales tax is a percentage of the price, so 6.8% should be written as 0.068.

The tax on the shirt is 0.068 times the cost of the shirt (40)

Then you add the tax to the cost of the shirt.

0.068(40) + 40 = 2.72 + 40 = 42.72