document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=615010>Question 615010</A>: <I><SPAN STYLE=\"word-break: break-all;\"> As a motorist approaches the turnpike, he travels at the rate of 20 miles per hour in street traffic. For the first mile on the turnpike he travels at the rate of 30 miles per hour and then covers the next mile in one minute. What is his average rate for the first three mile of this trip?<BR>\n" );
document.write( "A)25 mph<BR>\n" );
document.write( "B)30 mph<BR>\n" );
document.write( "C)33 mph<BR>\n" );
document.write( "D)36 2/3 mph<BR>\n" );
document.write( "E)50 mph </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #386901 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=386901\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> As a motorist approaches the turnpike, he travels at the rate of 20 miles per hour in street traffic.<BR>\n" );
document.write( " For the first mile on the turnpike he travels at the rate of 30 miles per hour and then covers the next mile in one minute.<BR>\n" );
document.write( " What is his average rate for the first three mile of this trip?<BR>\n" );
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document.write( "A mile a minute, av speed of 60 mph<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Let a = average speed for the 1st three miles<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Write a time equation; time = dist/speed<BR>\n" );
document.write( ":<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F20 ALIGN=MIDDLE  ALT=\"1%2F20\"   DISABLED_style= \"max-width:90%; height:auto;\" > + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F30 ALIGN=MIDDLE  ALT=\"1%2F30\"   DISABLED_style= \"max-width:90%; height:auto;\" > + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F60 ALIGN=MIDDLE  ALT=\"1%2F60\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3%2Fa ALIGN=MIDDLE  ALT=\"3%2Fa\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Multiply by 60a<BR>\n" );
document.write( "60a*<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F20 ALIGN=MIDDLE  ALT=\"1%2F20\"   DISABLED_style= \"max-width:90%; height:auto;\" > + 60a*<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F30 ALIGN=MIDDLE  ALT=\"1%2F30\"   DISABLED_style= \"max-width:90%; height:auto;\" > + 60a*<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F60 ALIGN=MIDDLE  ALT=\"1%2F60\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 60a*<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3%2Fa ALIGN=MIDDLE  ALT=\"3%2Fa\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Cancel the denominators<BR>\n" );
document.write( "3a + 2a + a = 180<BR>\n" );
document.write( "6a = 180<BR>\n" );
document.write( "a = 180/6<BR>\n" );
document.write( "a = 30 mph </SPAN>\n" );
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