So first to do this you should find 25% of 185. To do this you should divide it by 4 and get 46.25. Then subtract that amount from 185 and end up with 138.75, the discounted price. Now we have to find the sales tax amount. For this part we will divide 138.75 by 20 and get 6.94 (rounded to nearest cent). Add those two together, and voila! you have $145.69. Hope this helps!