document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=320632>Question 320632</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 8.  It took Terry 7 hours to drive the 390 km from Cold Bay to Hot Lake.  For the first part of the trip he averaged 60 km/h, but was forced to slow down for the remainder of the trip to 50km/h.<BR>\n" );
document.write( "(a)  How many hours did Terry spend driving at each speed? <BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #229624 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=229624\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Terry 7 hours to drive the 390 km <BR>\n" );
document.write( "first part of the trip he averaged 60 km/h,<BR>\n" );
document.write( "the remainder of the trip to 50km/h.<BR>\n" );
document.write( "..<BR>\n" );
document.write( "let first part distance be x km.<BR>\n" );
document.write( "second part distance will be 390-x km<BR>\n" );
document.write( "..<BR>\n" );
document.write( "first part speed = 60km/hr<BR>\n" );
document.write( "second part speed = 50km/hr<BR>\n" );
document.write( "..<BR>\n" );
document.write( "Time taken in first part + time taken in second part = total time taken\r<BR>\n" );
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document.write( "x/60 + 390-x  / 50 = 7<BR>\n" );
document.write( "LCM = 300<BR>\n" );
document.write( "5x+6(390-x) / 300 =7<BR>\n" );
document.write( "5x+2340-6x = 2100<BR>\n" );
document.write( "-x=-240<BR>\n" );
document.write( "x= 240 km<BR>\n" );
document.write( "distance =240, speed = 60,<BR>\n" );
document.write( "so time = 240/60 <BR>\n" );
document.write( "= 4 hours in the first part<BR>\n" );
document.write( "3 hours in the second part.<BR>\n" );
document.write( "..<BR>\n" );
document.write( "CHECK<BR>\n" );
document.write( "240/60 + 150/5 = 7 hours\r<BR>\n" );
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