The unit rates are: 100 words in 5 minutes and 20 words per minute, and that is because usually when we want to find the rate of something, we do it by time.
The unit rate of 20 words per minute/ 0.3 words per second.
Given that,
Caleb types 100 words in 5 minutes.
100 words to 5 minutes or 5 minutes per 100 words,
20 words per minute or 1 minute to 20 words.
We have to determine,
What is the unit rate?
According to the question,
A rate is a ratio that is used for comparing two different kinds of quantities which have different units.
Since Caleb types 100 words in 5 mins then the unit rate is:
100 words = 5 minutes
On comparing the ratio 1 minute, and to do this divide both sides of the equation by 5,
[tex]\dfrac{100}{5} \ words = \dfrac{5}{5} \ minute\\\\20 \ words = 1 \ minute[/tex]
The unit rates are 100 words in 5 minutes and 20 words per minute.
Caleb types 20 words in 1 min then the unit rate is:
20 words = 1 minutes
20 words = 60 seconds
On comparing the ratio 60 seconds, and to do this divide both sides of the equation by 60,
[tex]\dfrac{20}{60} \ words = \dfrac{60}{60}\ second \\\\0.3\ words = 1 \ second[/tex]
The unit rate of 20 words per minute/ 0.3 words per second.
To know more about the Unit rate click the link given below.
https://brainly.com/question/19399930
