Set up an equation based on the information given
[tex]89 + 89 + x + x = 328[/tex]
Combine like terms
[tex]89 + 89 = 178[/tex]
[tex]x + x = 2x[/tex]
[tex]2x + 178 = 328[/tex]
Solve
[tex]2x + 178 = 328[/tex]
[tex]328 - 178 = 150[/tex]
[tex]2x = 150[/tex]
[tex]x = 75[/tex]
Answer
The width of the rectangular field is 75 yards.
