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Math Help - Need help with word problem...

  1. #1
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    Need help with word problem...

    The length of a rectangle is 3cm greater tan the width. If each dimension is increased by 2cm, the area is increased by 26cm. Find the original dimension of the rectangle.

    Ok.. i wrote this to try to solve it but somewhere along the line im wrong and keep getting the wrong answer..can someone please show me what im doing wrong

    (w + 2) (l + 2) = a + 26
    (w + 2 + 3) (w + 2) = (w + 3) (w + 26)
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  2. #2
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    Hello, (-__-)!

    The length of a rectangle is 3 cm greater than the width.
    If each dimension is increased by 2 cm, the area is increased by 26 cm.
    Find the original dimension of the rectangle.

    Let W = width of the rectangle.
    Then W + 3 = length of the rectangle.

    The area of this rectangle is: . W(W+3) m.


    If each dimension is increased by 2 cm,
    . . the new width is: W + 2,
    . . the new length is: W + 5

    The area of the new triangle is: . (W+2)(W+5) m.


    We're told that the new area is 26 m more than the original area.

    There is our equation! . . . . . (W+2)(W+5) \;=\;W(W+3) + 26


    Can you finish it now?

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