document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=749355>Question 749355</A>: <I><SPAN STYLE=\"word-break: break-all;\"> please help me with this word problem:<BR>\n" );
document.write( "Two stations A and B are 90km apart and on a highway.A car starts from A and another from B at the same time.If they go in the same direction, they meet after 9 hours and if they go in opposite directions,they meet after 1 2/7 (one- two by seven hours)hours, find the speeds of both the cars.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #456036 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=456036\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Two stations A and B are 90km apart and on a highway.<BR>\n" );
document.write( "A car starts from A and another from B at the same time.<BR>\n" );
document.write( " If they go in the same direction, they meet after 9 hours and<BR>\n" );
document.write( " if they go in opposite directions, they meet after 1 2/7 hours,<BR>\n" );
document.write( "find the speeds of both the cars.<BR>\n" );
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document.write( "Change 1 2/7 hrs to 9/7 hrs<BR>\n" );
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document.write( "Let x = Car from A's speed<BR>\n" );
document.write( "Let y = Car from B's speed<BR>\n" );
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document.write( "A distance equation when going towards each other<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9%2F7 ALIGN=MIDDLE  ALT=\"9%2F7\"   DISABLED_style= \"max-width:90%; height:auto;\" >x + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9%2F7 ALIGN=MIDDLE  ALT=\"9%2F7\"   DISABLED_style= \"max-width:90%; height:auto;\" >y = 90<BR>\n" );
document.write( "multiply by 7<BR>\n" );
document.write( "9x + 9y = 630<BR>\n" );
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document.write( "A distance equation when going the same direction<BR>\n" );
document.write( "9x = 9y + 90<BR>\n" );
document.write( "9x - 9y = 90<BR>\n" );
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document.write( "Use elimination here<BR>\n" );
document.write( "9x + 9y = 630<BR>\n" );
document.write( "9x - 9y = 90<BR>\n" );
document.write( "---------------addition eliminates y, find x<BR>\n" );
document.write( "18x = 720<BR>\n" );
document.write( "x = 720/18<BR>\n" );
document.write( "x = 40 km/hr speed of the Car from A<BR>\n" );
document.write( "then<BR>\n" );
document.write( "9(40) + 9y = 630<BR>\n" );
document.write( "9y = 630 - 360<BR>\n" );
document.write( "9y = 270<BR>\n" );
document.write( "y = 270/9<BR>\n" );
document.write( "y = 30 km/hr speed of the car from B<BR>\n" );
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document.write( "You can confirm this <BR>\n" );
document.write( "9(40) - 9(30) = 90 </SPAN>\n" );
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