document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=628312>Question 628312</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An automobile car traveled 200 miles and at same time a track can travel 150 miles .If the automobile travels at the average speed of 15 miles per hour faster than the track then . Find their average rate? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #395565 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=395565\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> An automobile car traveled 200 miles and at same time <BR>\n" );
document.write( "a truck can travel 150 miles .<BR>\n" );
document.write( "If the automobile travels at the average speed of 15 miles per hour faster<BR>\n" );
document.write( " than the truck then . <BR>\n" );
document.write( "Find their average rate?<BR>\n" );
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document.write( "Let s = speed of the truck<BR>\n" );
document.write( "then<BR>\n" );
document.write( "(s+15) = speed of the car<BR>\n" );
document.write( ";<BR>\n" );
document.write( "Write a time equation: time = dist/speed<BR>\n" );
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document.write( "truck time = car time<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=150%2Fs ALIGN=MIDDLE  ALT=\"150%2Fs\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=200%2F%28%28s%2B15%29%29 ALIGN=MIDDLE  ALT=\"200%2F%28%28s%2B15%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Cross multiply<BR>\n" );
document.write( "150(s+15) = 200s<BR>\n" );
document.write( "150s = 2250 = 200s<BR>\n" );
document.write( "2250 = 200s - 150s<BR>\n" );
document.write( "2250 = 50s<BR>\n" );
document.write( "s = 2250/50<BR>\n" );
document.write( "s = 45 mph is the speed of the truck<BR>\n" );
document.write( "then<BR>\n" );
document.write( "45 + 15 = 60 mph is the speed of the car<BR>\n" );
document.write( ":<BR>\n" );
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document.write( "Confirm this by finding the time of each, they should be equal<BR>\n" );
document.write( "150/45 =  3.33 hrs<BR>\n" );
document.write( "200/60 = 3.33 hrs </SPAN>\n" );
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