SOLUTION: A fence builder wishes to determine the cost of fencing a rectangular yard with a perimeter of 68 feet. Suppose that the length of the yard is 4 feet less than its width. Find th

Algebra ->  Length-and-distance -> SOLUTION: A fence builder wishes to determine the cost of fencing a rectangular yard with a perimeter of 68 feet. Suppose that the length of the yard is 4 feet less than its width. Find th      Log On


   

Question 115188: A fence builder wishes to determine the cost of fencing a rectangular yard with a perimeter of 68 feet. Suppose that the length of the yard is 4 feet less than its width. Find the length and width of the room.
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
L=W-4
PERIMETER=2W+2L
2W+2(W-4)=68
2W+2W-8=68
4W=68+8
4W=76
W=76/4
W=19 FEET IS THE WIDTH
L=19-4=15 FEET FOR THE LENGTH.
PROOF
2*19+2*15=68
38+30=68
68=68