A speedreader can read 75 words in 1/4 of a minute. How many words can they read per minute? Which expression will determine the unit rate of words per minute?
To find how many words a speedreader can read per minute, we need to set up a proportion.
If the speedreader can read 75 words in 1/4 of a minute, that means they can read 75 * 4 = 300 words in 1 minute.
Therefore, the speedreader can read 300 words per minute.
The expression that determines the unit rate of words per minute is "words / minute".