Photoreading is different from speed reading in that you really never calculate or care about your wpm score. With speed reading, if you read at 5000 wpm it will take you the same ammount of time to read any two texts with the same number of words. With photoreading, you super read all over the book until you get everything you want out of it. You may not even read most of the actual text so it would be innacturate to calculate words per minute.
total time spent with a book varies based on purpose,difficulty, interest and probably other things too
