a store 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 B
a 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