document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=78653>Question 78653</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0618306161/algebrahomeworkh>intermediate algebra w/appl</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> an insurance representative traveled 735 mi by commercial jet and then an additional 105 mi by helicopter. The rate of the jet was four times the rate of the helicopter. the entire trip took 2.2 hours. Find the rate of the jet. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #56402 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=56402\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> an insurance representative traveled 735 mi by commercial jet and then an additional 105 mi by helicopter. The rate of the jet was four times the rate of the helicopter. the entire trip took 2.2 hours. Find the rate of the jet.<BR>\n" );
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document.write( "Jet DATA:<BR>\n" );
document.write( "distance=735 mi ; rate = 4x  mi/hr ; time=d/r = 735/4x hrs\r<BR>\n" );
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document.write( "------------------<BR>\n" );
document.write( "Helicopter DATA:<BR>\n" );
document.write( "distance= 105 mi ; rate = x mi/hr ; time=d/r=  105/x hrs<BR>\n" );
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document.write( "EQUATION:<BR>\n" );
document.write( "time + time = 2.2 hrs<BR>\n" );
document.write( "Note: 2.2(10/10)=22/10<BR>\n" );
document.write( "735/4x + 105/x = 22/10<BR>\n" );
document.write( "Note: the least common multiple of 4x, x, and 10 is 20x.<BR>\n" );
document.write( "Multiply thru by 20x to get:<BR>\n" );
document.write( "5*735 + 2100 = 44x<BR>\n" );
document.write( "x=131.25 mph (speed of helicopter)<BR>\n" );
document.write( "4x=525 mph (speed of jet)<BR>\n" );
document.write( "================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );