document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=895013>Question 895013</A>: <I><SPAN STYLE=\"word-break: break-all;\"> please help with this word problem.\r<BR>\n" );
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document.write( "1) A certain rectangle has an area 78 cm^2. If its length is decreased by 3 and its width is increased by 4, it becomes a square. Find the dimension of the original rectangle. </SPAN>\n" );
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document.write( "A certain rectangle has an area 78 cm^2. If its length is decreased by 3 and its width is increased by 4, it becomes a square. Find the dimension of the original rectangle.<BR>\n" );
document.write( "A:<BR>\n" );
document.write( "Let x = length<BR>\n" );
document.write( "therefore, width = 78/x<BR>\n" );
document.write( "x - 3 = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=78%2Fx+%2B+4 ALIGN=MIDDLE  ALT=\"78%2Fx+%2B+4\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Multiply both sides by x<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2+-+3x+=+78+%2B+4x ALIGN=MIDDLE  ALT=\"x%5E2+-+3x+=+78+%2B+4x\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2+-+7x+-+78+=+0 ALIGN=MIDDLE  ALT=\"x%5E2+-+7x+-+78+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(x - 13)(x + 6) = 0<BR>\n" );
document.write( "x = 13 [disregard the negative root]<BR>\n" );
document.write( "The length is 13 cm and the width is 6 cm. </SPAN>\n" );
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