A rectangle has a perimeter of 26 feet. Twice its length (l) is one foot more than three times its width (w). What is the length of the rectangle, in feet?

Question

nurali · Answer

Let L represent the length of the rectangle 
Let W represent the width of the rectangle 

Perimeter formula: 2L + 2W = 26 
Given: 2L = 3W + 1 (I guess this was the hard part) 

So, 3W + 1 + 2W = 26 \ solve for W = 5 
Therefore 2L + 10 = 26 \ solve for L 

2L=26-10
2L=16
L=8