SOLUTION: What is the width of the rectangle if its perimeter is 144m and its length is 4 less than thrice its width?

SOLUTION: What is the width of the rectangle if its perimeter is 144m and its length is 4 less than thrice its width?

Algebra.Com

Question 765350: What is the width of the rectangle if its perimeter is 144m and its length is 4 less than thrice its width?
Answer by Cromlix(4381) (Show Source): You can put this solution on YOUR website!
Width = x
Length = 3x - 4
Perimeter = 2 * width + 2 * length
144 = 2(x) + 2(3x - 4)
144 = 2x + 6x - 8
144 = 8x - 8
8x = 144 + 8
8x = 152
x = 19
Width = 19m
Length = 53m
Hope this helps.
:-)
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