[tex]\begin{gathered} \text{sheila height is}\Rightarrow1.7m \\ \text{her son height is}\Rightarrow109\operatorname{cm}=1.09m \\ \text{The sheila is taller than to her son by} \\ \Rightarrow1.7-1.09=0.61m \\ \text{Sheila is 0.61m taller than her son.} \end{gathered}[/tex]
