A book scanner can scan 80 words in 4 minutes. How many words does the book scanner scan per minute?
To find the number of words the book scanner scans per minute, divide the total number of words scanned (80) by the total time taken (4 minutes).
80 words / 4 minutes = <<80/4=20>>20 words/minute.
Thus, the book scanner scans 20 words per minute.
To find out how many words the book scanner scans per minute, you can divide the total number of words scanned by the total time it took.
In this case, the book scanner scanned 80 words in 4 minutes.
So, the book scanner scans 80 words / 4 minutes = 20 words per minute.
Therefore, the book scanner scans 20 words per minute.