SOLUTION: a strip of uniform width is to be cut off of both sides and both ends of a sheet of paper that is 11 inches by 12 inches in order to reduce the size of the paper to an area of 20 s

SOLUTION: a strip of uniform width is to be cut off of both sides and both ends of a sheet of paper that is 11 inches by 12 inches in order to reduce the size of the paper to an area of 20 s

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Question 242247: a strip of uniform width is to be cut off of both sides and both ends of a sheet of paper that is 11 inches by 12 inches in order to reduce the size of the paper to an area of 20 square inches. find the width of the strip.
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
(11-x)(12-x)=20
x^2-23x+132=20
x^2-23x+112=0
(x-16)(x-7)=0
x=16, x=7
x=7 only answer for this question.
The width of the strip is 7/2=3.5"
.
Ed
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