Answer: [tex]1 \frac{2}{12}\ ft[/tex]
Step-by-step explanation:
The height of Denise castle is [tex]1 \frac{7}{12}=\frac{12\times 1+7}{12}=\frac{19}{12}\ ft[/tex]
height of her sister [tex]\frac{5}{12}\ ft[/tex]
Difference between the height of the castle
[tex]\Rightarrow \frac{19}{12}-\frac{5}{12}=\frac{14}{12}[/tex]
In mixed fraction it is [tex]\frac{14}{12}\ or\ 1 \frac{2}{12}\ ft[/tex]