document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=920275>Question 920275</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Adam made a trip to see his college friend. The college is 295 miles <BR>\n" );
document.write( "from Adam's house. He averaged 50 miles per hour (mph)) for most of <BR>\n" );
document.write( "the trip but only 40 mph for the part where the road was under <BR>\n" );
document.write( "construction. If the trip took 6 hours, how many miles of the road <BR>\n" );
document.write( "were under construction? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #558263 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=558263\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Adam made a trip to see his college friend. The college is 295 miles <BR>\n" );
document.write( "from Adam's house. He averaged 50 miles per hour (mph)) for most of <BR>\n" );
document.write( "the trip but only 40 mph for the part where the road was under <BR>\n" );
document.write( "construction. If the trip took 6 hours, how many miles of the road <BR>\n" );
document.write( "were under construction?<BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "1st part DATA:<BR>\n" );
document.write( "rate = 50 mph ; distance = x miles ; time = d/r = x/50 hrs<BR>\n" );
document.write( "------------------<BR>\n" );
document.write( "2nd part DATA:<BR>\n" );
document.write( "rate = 40 mph ; distance = 295-x miles ; time = d/r = (295-x)/40 hrs<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "Equation:<BR>\n" );
document.write( "time + time = 6 hrs.<BR>\n" );
document.write( "x/50 + (295-x)/40 = 6<BR>\n" );
document.write( "-----------------------<BR>\n" );
document.write( "40x + 50(295-x) = 6*50*40<BR>\n" );
document.write( "40x + 50*295 - 50x = 300*40<BR>\n" );
document.write( "----<BR>\n" );
document.write( "-10x = -2750<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "x = 275 miles <BR>\n" );
document.write( "295-x = 295-275 = 20 miles (road under construction)<BR>\n" );
document.write( "-----------------------<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "----------------------------------------------- </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );