.
What you see below is my correct solution to the problem,
produced against the incorrect solution by @MowMow.
Let w be the width of the field,
Then 2w+5 is the length of the field.
The perimeter = 196 = 2w + 2(2w+5)
186 = 6w
The width = 186/6 = 31 ft. and the length = 2*31+5 = 67 ft. ANSWER
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Solved and completed,
to disproof the incorrect solution by @MowMow.