This question is based on division. Therefore, the unit rate for the dozens of cookies sold per hour is 4.5 dozens per hour.
Given:
During a bake sale, one and half hour dozen cookies were sold in 1/3 hour.
We need to determined the unit rate for the dozens of cookies sold per hour.
According to the question,
It is given that, one and half hour dozen cookies were sold in 1/3 hour.
Now calculating the unit rate for the dozens of cookies sold per hour.
We get, by dividing one and half hour dozen by 1/3 hour.
In mathematically expressed as,
[tex]=\dfrac{1.5}{\frac{1}{3} }\\\\= \dfrac{15 \times 3}{10}\\\\= \dfrac{45}{10}\\\\= 4.5 \, dozens/ hr[/tex]
Therefore, the unit rate for the dozens of cookies sold per hour is 4.5 dozens per hour.
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