That depends on how people look at it. If you look casually, you can read 20 pages a minute. If you look carefully, I'm afraid you can't finish reading a page in a minute.
Generally, you can read about 2400 to 2000 words in 20 minutes.
Under normal circumstances, people's speech speed can be maintained at about 200 to 220 words per minute, which is the standard reading or speaking speed. If you speak too fast or too slow, the audience will feel uncomfortable, and the meaning expressed by the speaker may be ambiguous. So in general, it is necessary to read about 2000 words and 2400 words in 20 minutes.
Reading speed:
Different reading materials should use different speeds. For example, reading an exciting novel is faster than reading a biology textbook.
Different textbooks are used at different speeds, because some are well written and some are poorly written, so some are more difficult to read. When reading a chapter of different textbooks every semester, set a time for yourself to see how many pages you can read in an hour. If you have a more accurate estimate of your reading speed, you can better arrange your reading and learning time.
Read a chapter quickly first. Find out what the author emphasized. If the author gives many examples to a concept, it is also an important concept. If time is tight, you can skip the few parts written by the author.
Read the first sentence of each paragraph more carefully than the rest.
Before reading a chapter, pay attention to the title and the first sentence of each paragraph. Then close the book and ask yourself how much you didn't know about this subject before reading it.