Step by step
The question
Question: 240 words in 4 minutes.
How many words in 1 minute?
A unit rate tells us how much for just 1.
Here: words for 1 minute.
1 Write it as a fraction
We write it as a fraction.
The words go on top.
The minutes go on the bottom.
2 Divide to get 1 at the bottom
We want 1 minute on the bottom.
4 divided by 4 is 1.
We divide the top by 4 too, so the rate stays the same.
240 divided by 4 is 60.
So it is 60 words for 1 minute.
Per means for each.
So the unit rate is 60 words per minute.
3 Check
Let's check: 4 minutes at 60 words per minute.
4 times 60 is 240.
That is 240 words, so it is right!
Let's look back.
First: write it as a fraction.
Then: divide to get 1 at the bottom.
Last: check.