document.write( "Question 350986: A garden plot 5m by 15m has one of its sides next to a wall. The area of the plot is to be doubled by digging up a strip of uniform width along the other three sides. How wide should the border be? \n" ); document.write( "
Algebra.Com's Answer #250869 by stanbon(75887)\"\" \"About 
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A garden plot 5m by 15m has one of its sides next to a wall. The area of the plot is to be doubled by digging up a strip of uniform width along the other three sides. How wide should the border be?
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\n" ); document.write( "Draw the picture of the garden with the wall on one side.
\n" ); document.write( "Area of the garden = 15*5 = 75 m^2
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\n" ); document.write( "Let the uniform width of the stip be \"x\".
\n" ); document.write( "Area of the strip = 15x + x(x+5) + x(x+5) = 2x^2+25x
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\n" ); document.write( "Equation:
\n" ); document.write( "strip area = garden area
\n" ); document.write( "2x^2 + 25x = 75
\n" ); document.write( "2x^2+25x-75 = 0
\n" ); document.write( "(2x-5)(x+15) = 0
\n" ); document.write( "Positive solution:
\n" ); document.write( "x = 5/2 meters
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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