document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=278767>Question 278767</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Jack and Jim start at the same time to ride from place A to place B, 60 miles away. Jack travels 4 miles an hour slower than Jim. Jim reaches B and at once turns back meeting Jack 12 miles from B.The rate of Jack was:\r<BR>\n" );
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document.write( "(A) 4 mph (B) 8 mph (C) 12 mph (D) 16 mph (E) 20 mph </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #202769 by </B><A HREF=/tutors/aboutme.mpl?userid=Grinnell><B>Grinnell(63)</B></A><img src=\"/images/stars/stars-08.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Grinnell><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=202769\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Good Morning!<BR>\n" );
document.write( " Immediately, you have to recognize the fact that Jim travels 72 miles in the same time that Jack travels 48<BR>\n" );
document.write( "miles. Don't get 'twisted' in the turn-around--they want to confuse 'ya. Sooo, <BR>\n" );
document.write( "let x be the speed (or mph) that Jim travels<BR>\n" );
document.write( "let x-4 be the speed Jack travels.<BR>\n" );
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document.write( "x TIMES (time) =72 miles<BR>\n" );
document.write( "(x-4) TIMES (time) =48 miles<BR>\n" );
document.write( "Note, the time is the Konstant, or 'the same' Hey why don't we just divide both<BR>\n" );
document.write( "equations by the TIME or the Konstant?<BR>\n" );
document.write( "let t represent (time)<BR>\n" );
document.write( "x=72/t<BR>\n" );
document.write( "x-4=48/t<BR>\n" );
document.write( "Let's substitute, off to the races...<BR>\n" );
document.write( "72/t-4=48/t<BR>\n" );
document.write( "72-4t=48 (multiplied thru by t)<BR>\n" );
document.write( "-4t=-24<BR>\n" );
document.write( "t=6--not finished yet! NOW we go back and plug in our 't'.<BR>\n" );
document.write( "x(6)=72<BR>\n" );
document.write( "x is 12, go all the way back to the beginning ...this is Jim's speed<BR>\n" );
document.write( "12-4, or 8 is Jack's speed.<BR>\n" );
document.write( "Have a wonderful day! </SPAN>\n" );
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