You receive an 18% discount on a purchase that would have normally cost $350.00. how much did you spend on the purchase before tax?

By the given scenario in this item, the amount that is paid before tax for the item would only be equal to 82% of the original amount. This is due to the given 18% discount.
  To solve for the amount that needs to be paid, we simply multiply the base value with the decimal equivalent of the given percentage. That is,
                 P = ($350)(0.82) = $287
  $287