Posted by HM on Sunday, September 18, 2011 at 6:49pm.
If you make a sketch you will see that the
length = 3+x - 2 = x+1
and the width is
the height will be 1
Volume = (x+1)(x-2)(1) = 180
x^2 - x - 2 - 180 = 0
x^2 - x - 182 = 0
(x-14)(x+13) = 0
x = 14 or x = -13, but clearly x > 0
box is x+1 by x-2 by 1
15 by 12 by 1
check: what is 15*12*1 ?
is the length of 15 greater than the width of 12 by 3 ?
Thank you Reiny you are absolutely right with what you have but for some reason it does not match up to the answers in the multiple choice.
The multiple choice includes
1. 17 inch by 14 inch
2. 21 inch by 18 inch
3. 20 inch by 17 inch
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