Richard needed to read 5 books for his summer reading assignment it took him 4 5/8 hours to read the first 2 books it took him 7 7/8 hours to read the remaining 3 books how long did it take Richard to read all 5 books

To find the total time it took Richard to read all 5 books, we first need to add the time it took him to read the first 2 books and the time it took him to read the remaining 3 books.

Time to read first 2 books: 4 5/8 hours = 37/8 hours
Time to read remaining 3 books: 7 7/8 hours = 63/8 hours

Total time to read all 5 books: (37/8) + (63/8) = 100/8 = 12 4/8 = 12.5 hours

Therefore, it took Richard a total of 12.5 hours to read all 5 books.