document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=154741>Question 154741</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0495012661/algebrahomeworkh>college algebra ninth edition</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> One morning, John drove 5 hours before stoping to eat. After lunch, he increased his speed by 10 mph. If he completed a 430-mile trip in 8 hours of driving time, how fast did he drive in the morning? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #114101 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=114101\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> One morning, John drove 5 hours before stopping to eat. After lunch, he <BR>\n" );
document.write( "increased his speed by 10 mph. If he completed a 430-mile trip in 8 hours of <BR>\n" );
document.write( "driving time, how fast did he drive in the morning?<BR>\n" );
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document.write( "Let s = his speed in the morning<BR>\n" );
document.write( "then<BR>\n" );
document.write( "(s+10) = his speed in the afternoon<BR>\n" );
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document.write( "A total of 8 hrs driving time, if he drove 5 hrs in the morning,<BR>\n" );
document.write( "He drove 3 hrs in the afternoon<BR>\n" );
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document.write( "Write a distance equation: Dist = time * speed<BR>\n" );
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document.write( "Morning miles + afternoon miles = 430 miles<BR>\n" );
document.write( "5s + 3(s+10) = 430<BR>\n" );
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document.write( "5s + 3s + 30 = 430<BR>\n" );
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document.write( "8s = 430 - 30<BR>\n" );
document.write( "s = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=400%2F8 ALIGN=MIDDLE  ALT=\"400%2F8\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "s = 50 mph in the morning<BR>\n" );
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document.write( "Check solution by finding the distance at the two speeds:<BR>\n" );
document.write( "5(50) + 3(60) =<BR>\n" );
document.write( "250 + 180 = 430<BR>\n" );
document.write( " </SPAN>\n" );
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