Caleb types 100 words in 5 minutes. What is the unit rate?

3 Answers
Jan 27, 2018

Unit rate= 2020 words per minute/ 0.30.3 words per second

Explanation:

We could work out the unit rate in 2 ways:

Per Minute or Per second.

First we will start of with per minute:

Rate=Word/minute

=100/5=20=1005=20

therefore He writes 20 words a minute

Per Second:

Find out how many seconds are in a minute (60) and multiply by the total minutes, getting the amount of seconds.

60 xx 5=300 seconds

Rate= 100/300 = 1/3 = 0.bar3

therefore He writes 1/3 of word a second, so a word every 3 seconds.

Jan 27, 2018

Alternate way without using rate equations...

Explanation:

Since Caleb trypes 100 words in 5 mins we can say that:

100 " words" = 5 " minutes"

Hence we can try and find 1 minute, and to do this we can divide both sides of the equation by 5, remeber what we do to one side, we do to the other:

100/5 " words " = 5/5 " minutes "

=> 20 " words" = 1 " minutes"

color(red)(underline( "Hence we can say he types 20 words in 1 minute on average "

Going further we know:

1 " minute " = 60 " seconds"

So we can say:

20 " words " = 60 " seconds"

To get 60 seconds, we divide each side by 60:

20/60 " words " = 60/60 " seconds"

1/3 " of a word " = 1 " second"

color(red)(underline("Hence we can say he types about 1/3 of a word every second on average "

Jan 28, 2018

20"wpm"

Explanation:

We have;

100 words

5 minutes

"Unit Rate" = "Words"/"Units"

"Unit Rate" = 100/5

"Unit Rate" = 20 "WordsperUnit"

"Unit Rate" = 20"wpm"