SOLUTION: The Perimeter of a rectangle is 60cm. Its length is four times its width. Find its length.system of equations.

Question 931357: The Perimeter of a rectangle is 60cm. Its length is four times its width. Find its length.system of equations.
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!

 

Hi,

     .

2L + 2w = 60cm

L + w = 30cm

(4w) + w = 30

5w =30

w = 6cm  and L = 24cm 

and...checking

L + w = 30cm 

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