document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=840039>Question 840039</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Wilma drove at an average speed of 45 mi/h from her home in City A to visit her sister in City B. She stayed in City B 25 hours, and on the trip back averaged 50 mi/h. She returned home 45 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 #506061 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=506061\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  Wilma drove at an average speed of 45 mi/h from her home in City A to visit her sister in City B.<BR>\n" );
document.write( " She stayed in City B 25 hours, and on the trip back averaged 50 mi/h.<BR>\n" );
document.write( " She returned home 45 hours after leaving.\<BR>\n" );
document.write( " How many miles is City A from City B?<BR>\n" );
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document.write( "From the given information, we know the travel time there and back = 20 hrs<BR>\n" );
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document.write( "let d = the one-way distance<BR>\n" );
document.write( "write a time equation; time = dist/speed<BR>\n" );
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document.write( "AB time + BA time = 20 hrs<BR>\n" );
document.write( "<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;\" > + <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;\" > = 20<BR>\n" );
document.write( "Multiply by 450 to clear the denominators<BR>\n" );
document.write( "10d + 9d = 9000<BR>\n" );
document.write( "19d = 9000<BR>\n" );
document.write( "d = 9000/19<BR>\n" );
document.write( "d = 473.7 mi is the one-way distance<BR>\n" );
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document.write( "Check by finding the time each way:<BR>\n" );
document.write( "473.7/45 = 10.5 hrs<BR>\n" );
document.write( "473.7/50 =  9.5 hrs<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "total time: 20 hrs </SPAN>\n" );
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