Astore owner paid $15 for a book. she marked up the price of the book by 40% to determine its price part a what is the selling price, in dollars, of the book show your work. part ba customer buys a different book that has an l original selling price of $38. the book is discounted 25%. the customer must pay a 6% sales tax on the discounted price of book? what is the total amount, in dollars, the customer pays for the discounted book. show your work