document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=831042>Question 831042</A>: <I><SPAN STYLE=\"word-break: break-all;\">  Please help me solve this applying systems of linear equations word problem! Julie drove her car for 45 miles at an average speed of r miles per hour. On the return trip, traffic has increased, and Julie average speed is 3/4r. The round trip took a total of 1 hour and 45 minutes. Find the average speed for each portion of the trip.  Thanks </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #501114 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=501114\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> t=d/r\r<BR>\n" );
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document.write( "time going = 45/r\r<BR>\n" );
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document.write( "time return =45/(3r/4)\r<BR>\n" );
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document.write( "Time going + time return = 7/4 hours\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=45%2Fr+%2B+%2845%2F%283r%2F4%29%29=7%2F4 ALIGN=MIDDLE  ALT=\"45%2Fr+%2B+%2845%2F%283r%2F4%29%29=7%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=45%2Fr+%2B+%2860%2Fr%29=7%2F4 ALIGN=MIDDLE  ALT=\"45%2Fr+%2B+%2860%2Fr%29=7%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%2860%2B45%29%2Fr=7%2F4%29 ALIGN=MIDDLE  ALT=\"%2860%2B45%29%2Fr=7%2F4%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "105/r =7/4\r<BR>\n" );
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document.write( "r= 4*105/7\r<BR>\n" );
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document.write( "r=60\r<BR>\n" );
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document.write( "speed while going = 60 mph\r<BR>\n" );
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document.write( "returning speed = 3/4 *60 = 45 mph<BR>\n" );
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