**Perimeter = 346 yard**

suppose

**Width = x yard**

According to Condition.

**Length = x + 67 yard**

By the Formula

**Perimeter = 2*Length + 2*Width**

346 = 2*(x + 67) + 2*x

346 = 2*x + 134 + 2*x

346 = 4*x +134

346 - 134 = 4*x

212 = 4*x

x = 212/4

**x = 53**

Now

**x = 53**, put it into supposed length and width

**Width of football field = 53 yard**

**Length of football field = 53 + 67 = 120 yard**