Answer: 8 feet.
Step-by-step explanation:
Given : The students on a decorating committee create a banner.
Let x be the width of the banner.
The length of the banner is 20 feet.
The length of the banner is 2.5 times its width.
Then, we have
[tex]2.5x=20[/tex]
Divide both the sides by 2.5 , we get
[tex]x=\dfrac{20}{2.5}=8[/tex]
Therefore, the width (in feet) of the banner= 8 feet.
