document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=98632>Question 98632</A>: <I><SPAN STYLE=\"word-break: break-all;\"> During rush hour, Fernando can drive 40 miles using the side roads in the same time that it takes to travel 30 miles on the freeway.  If Fernando's rate on the side roads is 7 mi/h faster than his rate on the freeway, find his rate on the side roads. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #71871 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=71871\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> : During rush hour, Fernando can drive 40 miles using the side roads in the same time that it takes to travel 30 miles on the freeway. If Fernando's rate on the side roads is 7 mi/h faster than his rate on the freeway, find his rate on the side roads.<BR>\n" );
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document.write( "Let s = speed on the side-road<BR>\n" );
document.write( "then<BR>\n" );
document.write( "(s-7) = speed on the freeway<BR>\n" );
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document.write( "Time = dist/speed<BR>\n" );
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document.write( "Side-road time = Freeway time<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=40%2Fs ALIGN=MIDDLE  ALT=\"40%2Fs\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=30%2F%28%28s-7%29%29 ALIGN=MIDDLE  ALT=\"30%2F%28%28s-7%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Cross multiply and you have:<BR>\n" );
document.write( "40(s-7) = 30s<BR>\n" );
document.write( "40s - 280 = 30s<BR>\n" );
document.write( "40s - 30s = +280<BR>\n" );
document.write( "10s = 280<BR>\n" );
document.write( "s = 280/10<BR>\n" );
document.write( "s = 28 mph on the side-roads<BR>\n" );
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document.write( "Check our solution by finding the times, they should be equal<BR>\n" );
document.write( "40/28 = 1.42857<BR>\n" );
document.write( "30/21 = 1.42857, confirms our solution<BR>\n" );
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document.write( "Did this help? Not that hard, right?<BR>\n" );
document.write( " </SPAN>\n" );
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