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Mathegocart

Member

Registered: 2012-04-29

Posts: 2,226

Rectangle Word Problems?

Ok so I was just brushing up algebra skills for the test next week and I ran in a bump with this problem.
2. The perimeter of a rectangle is 48m. The width of the rectangle is 2 more than half the length. Find length and width.
So I set up these 2 equations

2l+2w=48

and

2w-4=l
(solved from w=l/2+2)
and got this
2(2w-4)+2w=48
4w-8+2w=48
6w-8=48
6w=56
w=28/3
Is this wrong because all the awnsers said they were integers..?

Last edited by Mathegocart (2016-01-26 11:16:22)

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bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Rectangle Word Problems?

Hi;

That is what I got too.

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In mathematics, you don't understand things. You just get used to them.
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Always satisfy the Prime Directive of getting the right answer above all else.

evene

Member

Registered: 2015-10-18

Posts: 272

Re: Rectangle Word Problems?

Can you list the answer choices? I am getting 28/3 too.

Could it be an answer choice error?

Last edited by evene (2016-01-26 12:37:59)

Relentless

Member

Registered: 2015-12-15

Posts: 631

Re: Rectangle Word Problems?

Length is 44/3 and width is 28/3.

If the width is supposed to be THREE more than half the length you get 14 and 10. Besides that I can't see a simple adjustment to make integers