Hi,
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length is 10 yards less than three times the width
Let x and ( 3x-10) represent the width and length respectively
Question states***
2(3x-10) + 2x = 92yd
Solving for x
8x = 112yd
x = 14yd, the width. The length is 32yd (42-10)
CHECKING our Answer***
64yd + 28yd = 92yd