Rectangular room has width half of its length. When 6 is decreased from both length and width then its area is differed by 108 so find the width.
Let the length be 2x, Then width will be x
The area : 2x^2
After decrease: Length(2x-6) & Width(x-6)
Now, the area:2x^2-18x+36
Hence, the eq. is 2x^2-(2x^2+18x+36)=108
Solving, we get x=8,(width)
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