SOLUTION: The length of a rectangle is 3 in. more than twice its width. If the perimeter of the rectangle is 36 in., what's the width of the rectangle?

Question 122660: The length of a rectangle is 3 in. more than twice its width. If the perimeter of the rectangle is 36 in., what's the width of the rectangle?
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Let L=length, w=width
Since the length is "3 in. more than twice its width", this means:

Start with the perimeter formula

Plug in the given perimeter and

Distribute

Combine like terms on the right side

Subtract 36 from both sides

Subtract 6w from both sides

Combine like terms on the right side

Divide both sides by -6 to isolate w

Divide

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Answer:
So our answer is

So the width is 5 inches

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