SOLUTION: the length of a rectangular playing field is 5ft less than twice its width. if the perimeter of the playing field is 230ft. find the lenght and width of the field.

Algebra ->  Equations -> SOLUTION: the length of a rectangular playing field is 5ft less than twice its width. if the perimeter of the playing field is 230ft. find the lenght and width of the field.      Log On


   

Question 117616:
the length of a rectangular playing field is 5ft less than twice its width. if the perimeter of the playing field is 230ft. find the lenght and width of the field.
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
L=2W-5
P=2L+2W
230=2(2W-5)+2W
230=4W-10+2W
230=6W-10
6W=230=10
6W=240
W=240/6
W=40 ANSWER FOR THE WIDTH.
L=2*40-5
L=80-5
L=75 ANSWER FOR THE LENGTH.
PROOF
230=2*75+2*40
230=150+80
230=230