Sales tax is a percentage of the amount of the item. If Mr. Brooks is paying 6% tax on an item that costs $850, not only is he paying 100% of the cost of the item, he's paying another 6% on top of that. So we can say that he is paying 106% of $850, which in equation form, is
850(1.06) = ???
The amount that he will pay after adding in tax of 6% is $901
