Question 1015290
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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 

{{{(1+x/100)*L}}} . {{{(1-x/100)*W}}} = {{{0.96*LW}}}.

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.
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