Since the average in Pennsylvania is 9 times the average in South Dakota, then
[tex]P=9\times S[/tex]Since the average in Pennsylvania is 95607
Then P = 95607
[tex]95607=9\times S[/tex]Divide both sides by 9
[tex]\begin{gathered} \frac{95607}{9}=\frac{9s}{9} \\ 10623=S \end{gathered}[/tex]There are 10623 sold in South Dakota