How do you find the unit rate of 405 rotations in 5 minutes?
1 Answer
The unit rate is 81 revolution per minute
Explanation:
Unit rate is where there is only 1 of the reference units of measurement. In this case the reference units are minutes.
The word 'per' means for 'one of'
So as a ratio we have: rotations per minute is:
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Initial condition:
As we need 1 minute we need to change the 5 into 1 so we divide 5 by 5.
To maintain proportionality (for multiply and divide) what we do to the bottom we do to the top.
Divide top and bottom by 5
The
So for 1 minute we have 81 revolutions.
The unit rate is 81 revolution per minute