Question 1168806
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<pre>

Let w be the width, in feet;  then the length is  (3w+3) feet.


The area equation is


    w*(3w+3) = 396.


To solve it, cancel the common factor 3 in both sides.  You will get then


    w*(w+1) = 132.


From this point, there are 2 ways to complete the solution.


1)  You may reduce the last equation to the standard form quadratic equation and then solve it 

    using either the quadratic formula or factoring.


2)  Or you may guess MENTALLY two factors of the number 132 that differ by one unit

     132 = 11*12.


By doing this way, you obtain the <U>ANSWER</U> momentarily:


    The width is 11 feet; the length is 3*11 + 3 = 36 feet.
</pre>

Solved.