document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=270225>Question 270225</A>: <I><SPAN STYLE=\"word-break: break-all;\"> mark was driving on a 245 miles trip. for the first 3 hours he traveled at a steady speed. at teh point realizing he would be late to his destination, he increased his speed by 10mph for the remaining 2 hours of the trip. what was his driving speed for each portion of the trip? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #197997 by </B><A HREF=/tutors/aboutme.mpl?userid=Stitch><B>Stitch(470)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Stitch><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=197997\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Set-up:<BR>\n" );
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document.write( "Mark drove for five hors total.<BR>\n" );
document.write( "I wrote my equation in terms of his speed during the first three hours.<BR>\n" );
document.write( "Equation:<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3%2AX+%2B+2%2A%28X%2B10%29+=+245 ALIGN=MIDDLE  ALT=\"3%2AX+%2B+2%2A%28X%2B10%29+=+245\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Solution:<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3%2AX+%2B+2%2A%28X%2B10%29+=+245 ALIGN=MIDDLE  ALT=\"3%2AX+%2B+2%2A%28X%2B10%29+=+245\"   DISABLED_style= \"max-width:90%; height:auto;\" >Simplify<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3X+%2B+2X+%2B+20+=+245 ALIGN=MIDDLE  ALT=\"3X+%2B+2X+%2B+20+=+245\"   DISABLED_style= \"max-width:90%; height:auto;\" >Combine like terms<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5X+%2B+20+=+245 ALIGN=MIDDLE  ALT=\"5X+%2B+20+=+245\"   DISABLED_style= \"max-width:90%; height:auto;\" >Subtract 20 from both sides<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5X+=+225 ALIGN=MIDDLE  ALT=\"5X+=+225\"   DISABLED_style= \"max-width:90%; height:auto;\" > Divide both sides by 5<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28X+=+45%29 ALIGN=MIDDLE  ALT=\"highlight%28X+=+45%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "So now we know that Mark was going 45mph during the fist three hours of the trip.<BR>\n" );
document.write( "Then the problem states that during the remaining two hours he went 10mph faster. So during the last two hours of the trip Mark was going 55mph.\r<BR>\n" );
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document.write( "Check the answer:<BR>\n" );
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document.write( "Plug the values back into the equation<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3%2AX+%2B+2%2A%28X%2B10%29+=+245 ALIGN=MIDDLE  ALT=\"3%2AX+%2B+2%2A%28X%2B10%29+=+245\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3%2A%2845%29+%2B+2%2A%2855%29+=+245 ALIGN=MIDDLE  ALT=\"3%2A%2845%29+%2B+2%2A%2855%29+=+245\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=135+%2B+110+=+225 ALIGN=MIDDLE  ALT=\"135+%2B+110+=+225\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28225+=+225%29 ALIGN=MIDDLE  ALT=\"highlight%28225+=+225%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );