Answer:
The markup rate is 144% .
Step-by-step explanation:
Formula
![Mark\ up\ percentage = \frac{(Selling\ price-Cost\ price)\times 100}{Cost\ price}](https://tex.z-dn.net/?f=Mark%5C%20up%5C%20percentage%20%3D%20%5Cfrac%7B%28Selling%5C%20price-Cost%5C%20price%29%5Ctimes%20100%7D%7BCost%5C%20price%7D)
As given
Clara Schumann is buying bagels for her coworkers, She buys a dozen bagels priced at $5.49 a dozen.
i.e
Selling price of a dozen bagels is $5.49 .
The bakery's cost for making the bagels is $2.25 per dozen.
i.e
Cost price of a dozen bagels is $2.25 .
Putting all the values in the formula
![Mark\ up\ percentage = \frac{(5.49-2.25)\times 100}{2.25}](https://tex.z-dn.net/?f=Mark%5C%20up%5C%20percentage%20%3D%20%5Cfrac%7B%285.49-2.25%29%5Ctimes%20100%7D%7B2.25%7D)
![Mark\ up\ percentage = \frac{3.24\times 100}{2.25}](https://tex.z-dn.net/?f=Mark%5C%20up%5C%20percentage%20%3D%20%5Cfrac%7B3.24%5Ctimes%20100%7D%7B2.25%7D)
![Mark\ up\ percentage = \frac{32400\times 100}{225\times 100}](https://tex.z-dn.net/?f=Mark%5C%20up%5C%20percentage%20%3D%20%5Cfrac%7B32400%5Ctimes%20100%7D%7B225%5Ctimes%20100%7D)
![Mark\ up\ percentage = \frac{32400}{225}](https://tex.z-dn.net/?f=Mark%5C%20up%5C%20percentage%20%3D%20%5Cfrac%7B32400%7D%7B225%7D)
Markup percentage = 144 %
Therefore the markup percentage is 144% .