document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=97986>Question 97986</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0395977258/algebrahomeworkh></A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> In a walkathon to raise money for charity, elisa walked a certian distance at 5 mi/h and then walked twice that distance at 8 mi/h. Her total time walking and jogging was 2h and 15min. How many miles long was the walkathon?\r<BR>\n" );
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document.write( "I know that you have to multiply the time times the rate, but I can't figure out the equation to do it. Please help. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #71297 by </B><A HREF=/tutors/aboutme.mpl?userid=ptaylor><B>ptaylor(2198)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ptaylor><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=ptaylor><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=71297\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Distance(d) equals Rate(r) times Time(t) or d=rt; r=d/t and t=d/r\r<BR>\n" );
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document.write( "Let d=distance that Elisa walked at 5 mi/hr\r<BR>\n" );
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document.write( "Then 2d=distance she walked at 8 mi/hr\r<BR>\n" );
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document.write( "We know that the distance she walked at 5 mi/hr (d) plus the distance she walked at 8 mi/hr (2d) equals length of walkathon or 3d=length of walkathon\r<BR>\n" );
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document.write( "Now we are told that the time walked at 5 mi/hr (d/5) plus the time walked at 8 mi/hr (2d/8) equals 2.25 hr.<BR>\n" );
document.write( "So our equation to solve is:\r<BR>\n" );
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document.write( "d/5+2d/8=2.25   multiply each term by 40 (the LCM)\r<BR>\n" );
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document.write( "8d+10d=90 combine like terms<BR>\n" );
document.write( "18d=90  divide both sides by 18<BR>\n" );
document.write( "d=5 mi------------------distance Elisa walked at 5 mi/hr<BR>\n" );
document.write( "2d=2*5=10 mi------------------distance she walked at 8 mi/hr\r<BR>\n" );
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document.write( "3d=3*5=15 mi-----------length of walkathon\r<BR>\n" );
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document.write( "CK<BR>\n" );
document.write( "5/5+10/8=2.25<BR>\n" );
document.write( "1+1.25=2.25<BR>\n" );
document.write( "2.25=2.25\r<BR>\n" );
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document.write( "Hope thsi helps----ptaylor\r<BR>\n" );
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document.write( " </SPAN>\n" );
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