SOLUTION: the length of a rectangle is 3 inches more than twice the width. the perimeter is 36 inches. what is length and width

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Question 369094: the length of a rectangle is 3 inches more than twice the width. the perimeter is 36 inches. what is length and width
Answer by neatmath(302) About Me  (Show Source):
You can put this solution on YOUR website!
Let l be the length, w be the width, and P be the perimeter.

l=2*w+3 given

P=2*l+2*w formula for perimeter of a rectangle

P=2*(2*w+3)+2*w

36=2*(2*w+3)+2*w

36=4w+6+2w

36=6w+6

30=6w

w=5

l=2*w+3

l=2*5+3

l=13

Thus, the length is 13 and the width is 5.

Therefore the perimeter would be 13*2+5*2 which would equal 36!

I hope this helps!