SOLUTION: A rectangle has a perimeter of 140 units. It's length is 10 units more than its width. If l represents the length and w represents the width, then this situation can be represented

Algebra ->  Rectangles -> SOLUTION: A rectangle has a perimeter of 140 units. It's length is 10 units more than its width. If l represents the length and w represents the width, then this situation can be represented      Log On


   

Question 610215: A rectangle has a perimeter of 140 units. It's length is 10 units more than its width. If l represents the length and w represents the width, then this situation can be represented by this system of equations:
2L + 2W = 140
L=w+10
The answers choices are 65 units, 30 units, and 70 units.
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
2L + 2W = 140


2(W+10) + 2W = 140 ... Replace L with W+10


From here, solve for W. Once you have a solution for W, use it to find a solution for L