document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=124730>Question 124730</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Wilma drove at an average speed of 50 mi/h from her home in City A to visit her sister in City B. She stayed in City B 10 hours, and on the trip back averaged 45 mi/h. She returned home 40 hours after leaving. How many miles is City A from City B </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #91509 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=91509\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Wilma drove at an average speed of 50 mi/h from her home in City A to visit her sister in City B. She stayed in City B 10 hours, and on the trip back averaged 45 mi/h. She returned home 40 hours after leaving. How many miles is City A from City B<BR>\n" );
document.write( ":<BR>\n" );
document.write( "First of all, let's just concern ourselves with the traveling time:<BR>\n" );
document.write( "Subtract the 10 hr stay from the total time (40 hr) she was gone;<BR>\n" );
document.write( "She had 30 hrs on the road<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Let d = distance from A to B<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Write a time equation: Time = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=distance%2Fspeed ALIGN=MIDDLE  ALT=\"distance%2Fspeed\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ":<BR>\n" );
document.write( "Time to B + time to A = 30 hrs<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2F50 ALIGN=MIDDLE  ALT=\"d%2F50\"   DISABLED_style= \"max-width:90%; height:auto;\" > + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2F45 ALIGN=MIDDLE  ALT=\"d%2F45\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 30<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Multiply equation by a multiple of both denominators, 450 would do it: <BR>\n" );
document.write( "450*<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2F50 ALIGN=MIDDLE  ALT=\"d%2F50\"   DISABLED_style= \"max-width:90%; height:auto;\" > + 450*<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2F45 ALIGN=MIDDLE  ALT=\"d%2F45\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 450(30)<BR>\n" );
document.write( "Cancel out the denominators and you have:<BR>\n" );
document.write( ":<BR>\n" );
document.write( "9d + 10d = 13500<BR>\n" );
document.write( ":<BR>\n" );
document.write( "19d = 13500<BR>\n" );
document.write( "d = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=13500%2F19 ALIGN=MIDDLE  ALT=\"13500%2F19\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "d = 710.5 miles from A to B<BR>\n" );
document.write( ":<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Check solution by finding the time each way and finding the total time:<BR>\n" );
document.write( "710.5/50 = 14.2 hrs<BR>\n" );
document.write( "710.5/45 = 15.8 hrs<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "Total time 30.0 hrs as given<BR>\n" );
document.write( ";<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Did I make this understandable? Any questions?\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );