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Rectangular plot of land was altered by increasing its length by X percent while decreasing it's a width by X percent.
If the total area of the plot of land of was decreased by 4% what is the value of x.
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The equation is
. = .
Cancel both sides by the factor LW. You will get the equation for the unknown x:
(1+0.01x)*(1-0.01x) = 0.96.
Can you solve it yourself?
It is very easy.