Homework Help: math

Posted by fernando on Thursday, March 24, 2011 at 10:58am.

the dimensions of a rectangle are such that its length is 3 inches more than its width. if the length were double and if the width were decreased by 1 inch, the area would be increased by 66inches ^2. What are the length and width of the rectangle?

math - PsyDAG, Thursday, March 24, 2011 at 11:25am
Let w = width and w+3 = length.

2(w+3)(w-1) - w(w+3) = 66

Solve for w, then w+3.

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