For this case, we should look for the 5.5% of 10,000 that the Tamika commission represents for the sale made. 
For this, we make a rule of three: 
10,000 ------------> 100% 
x ---------------------> 5.5% 
Where "x" represents the Tamika commission. 

So, Tamika wins a $ 550 commission 
Answer: 
$ 550