document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=804615>Question 804615</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Carlos and Maria drove a total of 311 miles in 6 hours. Carlos drove the first part of the trip and averaged 53 miles per hour. Maria drove the remainder of the trip and averaged 51 miles per hour. For approximately how long did Maria drive? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #484851 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=484851\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> total time = 6 hours . total distance = 311 miles\r<BR>\n" );
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document.write( "let Carlos drive for x miles\r<BR>\n" );
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document.write( "Maria drives for 311-x miles\r<BR>\n" );
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document.write( "Carlos --speed = 53 mph: Carlos time = x/53\r<BR>\n" );
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document.write( "Maris speed = 53 mph: Maria time = (311-x)/51\r<BR>\n" );
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document.write( "Carlos time + Maria time = 6 hours\r<BR>\n" );
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document.write( "x/53 + (311-x)/51 =6\r<BR>\n" );
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document.write( "51x+53(311-x)= 6*51*53\r<BR>\n" );
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document.write( "51x+16483-53x=16218\r<BR>\n" );
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document.write( "-2x=-265<BR>\n" );
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document.write( "x=137.5 miles------ distance driven by Carlos </SPAN>\n" );
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