Score: 33.33%, 10 of 30 pt Score: 0 of 5 pts P3-21 (similar to) Discount rate. Future Bookstore sells books before they are published. Today, they are offering the book Adventures in Finance for $13.56, but the book will not be published 4 of 6 (2 complete) EQuestion Help for another 2 years. The retail price when the book is published will be $26. What is the discount rate Future Bookstore is offering its customers for this book? What is the discount rate Future Bookstore is offering its customers for this book? (Round to two decimal places.)