document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=663119>Question 663119</A>: <I><SPAN STYLE=\"word-break: break-all;\"> : for the first 1.5 hours of a 91 km journey, the average speed was 30km/hour. if the average speed for the remainder of the journey was 23 km/hour, calculate the average speed for the entire journey. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #412635 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=412635\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  for the first 1.5 hours of a 91 km journey, the average speed was 30km/hour.<BR>\n" );
document.write( " if the average speed for the remainder of the journey was 23 km/hour, calculate the average speed for the entire journey.<BR>\n" );
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document.write( "Find the distance driven at 30 km/hr: 30*1.5 = 45 km<BR>\n" );
document.write( "then<BR>\n" );
document.write( "91 - 45 = 46 km driven at 23 km/hr<BR>\n" );
document.write( "and<BR>\n" );
document.write( "46/23 = 2 hrs is the time at 23 km/hr<BR>\n" );
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document.write( "let a = the av speed for the entire journey<BR>\n" );
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document.write( "Write a time equation; time = dist/speed<BR>\n" );
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document.write( "30km/hr time + 23km/hr time = 91km time<BR>\n" );
document.write( "1.5 + 2 = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=91%2Fa ALIGN=MIDDLE  ALT=\"91%2Fa\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "3.5 = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=91%2Fa ALIGN=MIDDLE  ALT=\"91%2Fa\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "multiply equation by a:<BR>\n" );
document.write( "3.5a = 91<BR>\n" );
document.write( "a = 91/3.5<BR>\n" );
document.write( "a = 26 km/hr av speed for the entire journey<BR>\n" );
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document.write( "Did all this make sense to you, any questions? C\r<BR>\n" );
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document.write( " </SPAN>\n" );
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