document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=593076>Question 593076</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A boy walked over hills at 3 kilometers per hour and on flat roads at 4 kilometers per hour.  He walked 18 kilometers in 5 hours. How much of his trip was over hills? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #376181 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=376181\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A boy walked over hills at 3 kilometers per hour and on flat roads at 4 kilometers per hour. He walked 18 kilometers in 5 hours. How much of his trip was over hills?<BR>\n" );
document.write( "**<BR>\n" );
document.write( "let x=distance walked over hills<BR>\n" );
document.write( "18-x=distance walked over flat roads<BR>\n" );
document.write( "travel time=distance/speed<BR>\n" );
document.write( "..<BR>\n" );
document.write( "x/3+(18-x)/4=5<BR>\n" );
document.write( "LCD:12<BR>\n" );
document.write( "4x+54-3x=60<BR>\n" );
document.write( "x=6 km<BR>\n" );
document.write( "ans: <BR>\n" );
document.write( "distance walked over hills=6 km </SPAN>\n" );
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