Richard needed to read 5 books for his summer reading assignment. It took him 458458 hours to read the first 2 books. It took him 778778 hours to read the remaining 3 books. How long did it take Richard to read all 5 books? (1 point) Responses 11481148 hours 11 4 8 hours 11681168 hours 11 6 8 hours 12481248 hours 12 4 8 hours 12681268 hours

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

458458 hours + 778778 hours = 1236236 hours

Therefore, it took Richard 1236236 hours to read all 5 books. So the correct answer is 12481248 hours.