SOLUTION: if the length of a rectangle is twice the width and the permiter is 120 centimeters what are the lengths and widths?

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Question 448663: if the length of a rectangle is twice the width and the permiter is 120 centimeters what are the lengths and widths?
Answer by emargo19(101) About Me  (Show Source):
You can put this solution on YOUR website!
Let W=x
let L=2x
2(l+2x)=120
2x+4x=120
6x=120
x=20
w=20
l=(20)(2)=40
Length=40cm
Width=20cm