1. If a store marks up the price of an item by 45% and sells it to customers for $58, what was the original price the store paid for the item?
2. Jeremy bough a souvenir while on vacation. The item cost $22, but the total bill was $22.43. What percent was the sales tax?
1. $58 / 1.45
2. [(22.43 - 22) / 22] * 100%