SOLUTION: a rectangle is twice as long as it is wide. the perimeter is 60 feet. find the dimensions

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Question 263103: a rectangle is twice as long as it is wide. the perimeter is 60 feet. find the dimensions
Answer by drk(1908) About Me  (Show Source):
You can put this solution on YOUR website!
a rectangle is twice as long as it is wide
translates as
(i) W+=+2L
the perimeter is 60 feet
translates as
(ii) 60+=+2L+%2B+2W
by substitution we get
(iii) 60+=+2L+%2B+2%282L%29
solving for L, we get
(Iv) 60+=+6L
and L = 10 ft
So W = 20 ft