The total amount of pistachios Sonya has = [tex]\frac{2}{3}[/tex] pound
Since, Sonya wants to divide it into 6 servings.
We have to determine the fraction of a pound, which is to be served in each serving.
The fraction of a pound which is served in each serving = [tex]\frac{2}{3} \div 6[/tex]
= [tex]\frac{2}{3} \times \frac{1}{6}[/tex]
[tex]= \frac{2}{18}[/tex]
= [tex]\frac{1}{9}[/tex]
So, [tex]\frac{1}{9}[/tex] pound of pistachios will be served in each serving.