posted by kara
the perimeter of a rectangle is twice the sum of its width and it length. the perimeter is 40meters and its lenght is 2 meters more than twice its width.
L = 2W + 2
2L + 2W = 40
Substitute 2W+2 for L in second equation and solve for L. Insert that value into the first equation and solve for W. Check by inserting both values into the second equation.
By the way, it helps to indicate your subject in the "School Subject" box, so those with expertise in the area will respond to the question.