document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=830714>Question 830714</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A man goes at the speed of 5 km/hour from P to Q and returns at the speed of 3 km/hour from Q to P. The average speed of whole journey is </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #500939 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=500939\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A man goes at the speed of 5 km/hour from P to Q and returns at the speed of 3 km/hour from Q to P.<BR>\n" );
document.write( " The average speed of whole journey is:<BR>\n" );
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document.write( "Let a = average speed for the whole journey<BR>\n" );
document.write( "Let d = the distance one way<BR>\n" );
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document.write( "Write a time equation, time = dist/speed<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2F5 ALIGN=MIDDLE  ALT=\"d%2F5\"   DISABLED_style= \"max-width:90%; height:auto;\" > + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2F3 ALIGN=MIDDLE  ALT=\"d%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%282d%29%2Fa ALIGN=MIDDLE  ALT=\"%282d%29%2Fa\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "multiply equation by 15a, cancel the denominators and you have:<BR>\n" );
document.write( "3ad + 5ad = 15(2d)<BR>\n" );
document.write( "8ad = 30d<BR>\n" );
document.write( "divide both sides by d<BR>\n" );
document.write( "8a = 30<BR>\n" );
document.write( "a = 30/8<BR>\n" );
document.write( "a = 3.75 mph<BR>\n" );
document.write( " </SPAN>\n" );
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