[tex]\begin{gathered} \text{If "S" is ms. Starks age, and "P" is principal jones' age, then we can state the relations as} \\ 2S+P=140 \\ P=S+32 \end{gathered}[/tex][tex]\begin{gathered} \text{ Replacing the second equation on the first, we have} \\ 2S+(S+32)=140 \\ 3S+32=140 \\ 3S=140-32 \\ S=\frac{108}{3} \\ S=36 \\ \\ \text{Thus } \\ P=36+32 \\ P=68 \\ \\ \text{ Principal Jones is 68 years old!} \end{gathered}[/tex]
