Question

If

A store owner paid $15 for a book. She marked up the price of the book by 40% to determine ts selling
price.
Part A
What is the selling price of the book?
Part B
A customer buys a different book that has an original selling price of $38. The book is discounted 25%.
The customer must pay a 6% sales tax on the discounted price of the book.
What is the total amount the customer pays for the discounted book?
Enter your answer in the box.
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Answer 1

the selling price is $28.50

i m confused on part b if you explain it i could help

Explanation: