The time required to finish 35 books and 400 pages depends on reading speed, reading habits, and the difficulty of the book. It is impossible to give an exact time. The following are some estimated times for reference only: If you read for two hours a day and read about 10 pages an hour, you can read 15 pages per minute. If you read at this speed, the time needed to read 35 books and 400 pages is about: 35 books x 2 hours x 15 pages/minute = 90 minutes It is important to note that reading speed may decrease over time, especially when reading the same type of books in a row. Therefore, if he could maintain a higher reading speed, he could complete the reading task faster. Different people have different reading habits and reading speeds. For example, some people can read 20 pages per minute while others can only read 10 pages per minute. Therefore, reading habits and reading speed would also affect the time taken to finish reading. In summary, the time required to read 35 books and 400 pages varies from person to person. It is impossible to give an exact time. If you can maintain a high reading speed and reading habits, you can complete the reading task faster.