if tax is included in the price, then the net price is = selling price - selling price * 0.05
that is net price = 8195 - 8195 * 0.05 = 8195 - 409.75 = 7,785.25 so selling price = 8195 and taxes=409.75
included in the selling price.
Now if tax is not included in selling price it will be 8195 + 8195 * 0.05 = 8195 + 409.75 = 8604.75
so selling price is 8195 + 409.75 = 8604.75