11. The area of the floor of a gym is 7,168 squarefeet. If the gym is 64 feet wide, how long is it?

Let l be the length of the gym in feet, then we can set the following equation:
[tex]l\times64=7168.[/tex]Dividing the above equation by 64 we get:
[tex]\begin{gathered} \frac{l\times64}{64}=\frac{7168}{64}, \\ l=112. \end{gathered}[/tex]Answer: The length of the gym is 112 feet.