Answe this question: Rebecca sells dolls at her doll store. If she sells a doll for $19, and there is 6% sales tax, what is the total cost of the doll? Round your answer to the nearest cent.
She sells a doll for 19$ and 6% of it has to go to tax.
6% of 19 is equivalent to doing 0.06 * 19 (percentages is *100) = 1.14.
Thus 1.14$ have to be taken from Rebecca's pre-tax gain which is 19$, and 19 - 1.14 = 17.86 post-tax.