document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=302389>Question 302389</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me with solving this last home worl problem it is due tomorrow! Thank .<BR>\n" );
document.write( " Solve using the five-step problem-solving process. Show all steps necessary to arrive at your solution.<BR>\n" );
document.write( "A rectangular flower bed with width 12 feet and length 15 feet is going to have a walkway of uniform width on all sides. If the area of the walkway is 90 square feet, how wide is the walkway? <BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #216810 by </B><A HREF=/tutors/aboutme.mpl?userid=london+maths+tutor><B>london maths tutor(243)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=london+maths+tutor><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=london+maths+tutor><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=216810\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let's the walk way width be x \r<BR>\n" );
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document.write( "The width including walk way = 12 + x + x  = 12 + 2x <BR>\n" );
document.write( "The length including walk way = 15 + x + x = 15 + 2x \r<BR>\n" );
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document.write( "Area of the flower bed = 12*15 = 180 ft^2 <BR>\n" );
document.write( "Area of the flower bed and walk way = (12+2x)*(15+2x) \r<BR>\n" );
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document.write( "The difference of the two area is 90 ft^2 \r<BR>\n" );
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document.write( "Therefore: \r<BR>\n" );
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document.write( "[(12+2x)*(15+2x)] - 180 = 90 <BR>\n" );
document.write( "(180 + 24x + 30x + 4x^2) - 180 = 90<BR>\n" );
document.write( "4x^2 + 54x - 90 = 0<BR>\n" );
document.write( "2x^2 + 27x - 45 = 0 \r<BR>\n" );
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document.write( "Using the formular : <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+ ALIGN=MIDDLE  ALT=\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "where a = 2 , b = 27 and c = -45 \r<BR>\n" );
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document.write( "x = 1.5 ft or - 15ft(N/A)\r<BR>\n" );
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document.write( "Answer: The width of the path way is 1.5ft\r<BR>\n" );
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