Question 408896
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Hi
the second piece must be twice as long as the first piece and the third piece
 must be two feet longer than the first piece.
Let x, 2x and (x+2) represent th elengths of the pieces
Question states***
 x + 2x +(x+2)= 12ft
Solving for x
     4x = 10
      x = 10/4 OR 2.5ft.  Pieces are 2.5ft, 5ft and 4.5ft
CHECKING our Answer***
2.5' + 5' +  4.5 = 12'