document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=316556>Question 316556</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The width of a rectangle is 3 meters less than the length.The perimeter is 14 meters.Find the width.\r<BR>\n" );
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document.write( "The second angle of a triangle is twice the first angle.The third angle is 20<BR>\n" );
document.write( "degrees more than the first angle.Find the first angle. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #226460 by </B><A HREF=/tutors/aboutme.mpl?userid=texttutoring><B>texttutoring(324)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=texttutoring><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=texttutoring><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=226460\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let w=width<BR>\n" );
document.write( "Let l=length\r<BR>\n" );
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document.write( "The width is 3 metres less than the length:\r<BR>\n" );
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document.write( "w = l - 3\r<BR>\n" );
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document.write( "or, l = w+3\r<BR>\n" );
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document.write( "Perimeter of a rectangle is given by: P=2w+2l\r<BR>\n" );
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document.write( "Plug l=w+3 into the perimeter equation and solve for w:\r<BR>\n" );
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document.write( "P=2w+2l<BR>\n" );
document.write( "P=2w + 2(w+3)<BR>\n" );
document.write( "14 = 2w + 2w +6<BR>\n" );
document.write( "8 = 4w<BR>\n" );
document.write( "w = 2\r<BR>\n" );
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document.write( "The length is l = w+ 3 = 2+3 = 5.\r<BR>\n" );
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document.write( "Angle question:\r<BR>\n" );
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document.write( "Let a=first angle, b=2nd angle, c=3rd angle\r<BR>\n" );
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document.write( "b=2a<BR>\n" );
document.write( "c=a+20\r<BR>\n" );
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document.write( "All triangles must have angle sums of 180 degrees, so:\r<BR>\n" );
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document.write( "a+b+c = 180\r<BR>\n" );
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document.write( "Now plug in b=2a and c=a+20 into this equation:\r<BR>\n" );
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document.write( "a+b+c=180<BR>\n" );
document.write( "a + 2a + a+20 = 180<BR>\n" );
document.write( "4a + 20 = 180<BR>\n" );
document.write( "4a = 160<BR>\n" );
document.write( "a = 40\r<BR>\n" );
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document.write( "The first angle is 40 degrees. </SPAN>\n" );
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