document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=933827>Question 933827</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An eastbound train leaves Vancouver for Toronto, a distance of about 4370 km, travelling at about 90km/h. At the same time a west bound train leaves Toronto to Vancouver travelling at about 70 km/h. How far from Toronto are the trains when they pass each other? For how long have they been travelling when this happens?\r<BR>\n" );
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document.write( "How much pure water bust be mixed with 9 pints of 50% developer to produce a mixture that is 28% developer? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #567050 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=567050\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> An eastbound train leaves Vancouver for Toronto, a distance of about 4370 km, travelling at about 90km/h. At the same time a west bound train leaves Toronto to Vancouver travelling at about 70 km/h. How far from Toronto are the trains when they pass each other? For how long have they been travelling when this happens?<BR>\n" );
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document.write( "let x=length of time trains had been traveling<BR>\n" );
document.write( "let d=distance from Toronto when trains pass each other<BR>\n" );
document.write( "travel time=distance/speed<BR>\n" );
document.write( "speed=90+70=160 km/h<BR>\n" );
document.write( "x=4370/160=27.31<BR>\n" );
document.write( "distance=speed*travel time<BR>\n" );
document.write( "d=70*x=1911.88<BR>\n" );
document.write( "length of time trains had been traveling=27.31 hrs<BR>\n" );
document.write( "distance from Toronto when trains pass each other=1911.88 km<BR>\n" );
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document.write( "How much pure water bust be mixed with 9 pints of 50% developer to produce a mixture that is 28% developer?<BR>\n" );
document.write( "let x=amt of pure water to be mixed<BR>\n" );
document.write( "50%*9=28%(9+x)<BR>\n" );
document.write( "4.5=2.52+.28x<BR>\n" );
document.write( ".28x=1.98<BR>\n" );
document.write( "x=7.07<BR>\n" );
document.write( "amt of pure water to be mixed=7.07 pints </SPAN>\n" );
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