SOLUTION: The length of a rectangle is twice its width. The perimeter is 30. Find its dimensions.

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Question 954592: The length of a rectangle is twice its width. The perimeter is 30. Find its dimensions.
Found 2 solutions by rfer, EdenWolf:
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
2x+2(2x)=30
6x=30
x=30/6
x=5
2x=10

Answer by EdenWolf(517) About Me  (Show Source):
You can put this solution on YOUR website!
Let w = the width, and 2w = the length. Set up an equation.
2%28w%2B2w%29=30
2w%2B4w=30
6w=30
w=5
5%2A2=10
Width = 5 units, Length = 10 units