document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=633948>Question 633948</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Question: Mary travels from the city to visit her sister in the country. On the way, she travels 55km/hr. She stays with her sister for 20 hours before starting home. On the return trip, she travels 45 km/hr. She returned home a grand total of 41 hours after she left. How far away, in kilometers, is Mary's house from her sister's?\r<BR>\n" );
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document.write( "What I've managed to reason:<BR>\n" );
document.write( "41 hours total-20 hours visiting=21 hours traveling<BR>\n" );
document.write( "From there, I'm clueless. I've no idea how to start building the equation for this. Help, please? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #399295 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=399295\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Mary travels from the city to visit her sister in the country. On the way, she travels 55km/hr. She stays with her sister for 20 hours before starting home. On the return trip, she travels 45 km/hr. She returned home a grand total of 41 hours after she left. How far away, in kilometers, is Mary's house from her sister's? <BR>\n" );
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document.write( "City to Country DATA:<BR>\n" );
document.write( "rate = 55 kmh ; time = x hrs ; distance = 55x km<BR>\n" );
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document.write( "Country to Cith DATA:<BR>\n" );
document.write( "rate = 45 kmh ; time = (21-x) hrs ; distance = 45(21-x) km<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "distance = distance<BR>\n" );
document.write( "55x = 45(21-x)<BR>\n" );
document.write( "55x = 45*21 - 45x<BR>\n" );
document.write( "100x = 45*21<BR>\n" );
document.write( "x = 9.45 hrs (time going city to country)<BR>\n" );
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document.write( "Distance = 55x = 55*9.45 = 519.75 km<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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