SOLUTION: The perimeter of a rectangle garden is 72 feet. Its length is 3 times the width. Find the length and width of the garden.

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Question 1196818: The perimeter of a rectangle garden is 72 feet. Its length is 3 times the width. Find the length and width of the garden.
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

The perimeter of a rectangle garden is 72 feet, so
2%28l%2Bw%29=72
l%2Bw=72%2F2
l%2Bw=36...........eq.1

if its length is 3 times the width, we have
l=3w.........eq.2

substitute l in eq.1

3w%2Bw=36...........eq.1
4w=36
w=9

go to
l=3w.........eq.2, substitute w
l=3%2A9
l=27

answer: the length of the garden is 27 and width is 9