Answer:
[tex]3 \frac{1}{3}[/tex] vases per hour
Step-by-step explanation:
To find the unit rate, solve the total amount of vases that Emily arranged divided by the amount of time that Emily took to arrange the vases.
Or, in other words, solve 20 ÷ 6, since Emily arranged 20 vases and it took her 6 hours to complete it.
You can do this by hand or you can do it on a calculator.
After you solved it, you should get [tex]3 \frac{1}{3}[/tex], or 3.33333...
So, Emily's rate is [tex]3 \frac{1}{3}[/tex] vases per hour.