Question 1123331
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L + W + L + W = 340   yards   (the perimeter)

2L + 2W = 340


L + W = 340/2 = 170.


Substitute L = W + 50.


(W + 50) + W = 170


2W = 170 - 50 = 120


W = 120/2 = 60.


<U>Answer</U>.  The dimensions are  60 yd (width)  and  60 + 50 = 110 yd (length).
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Solved.