document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=804230>Question 804230</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In the great race between Wanda and Freddie, both went around the 1/4-mile track three times. Wanda ran each lap at the rate of 8 miles per hour. Freddie ran the first lap at the rate of 10 miles per hour, the second lap at 8 miles per hour, and the third lap at six miles per hour. Use the formulas to solve each problem. Write the answers to the nearest tenth of a minute.\r<BR>\n" );
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document.write( "Rate x Time = Distance     Time = Distance/Rate\r<BR>\n" );
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document.write( "How much time did it take Wanda to run one lap?<BR>\n" );
document.write( "My answer: 1.9 minutes\r<BR>\n" );
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document.write( "How much time did it take Freddie to run the first lap? the second lap? the third lap?<BR>\n" );
document.write( "My answer: 2.5 min, 1.9 min, 1.5 min\r<BR>\n" );
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document.write( "Who won the race? by how many minutes?<BR>\n" );
document.write( "My answer: Wanda, by 0.2 minutes </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #484672 by </B><A HREF=/tutors/aboutme.mpl?userid=solver91311><B>solver91311(24713)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=solver91311><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=solver91311><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=484672\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <font face=\"Times New Roman\" size=\"+2\">\r<BR>\n" );
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document.write( "You are very close.  You did all of the calculations correctly, but you introduced round-off errors into your intermediate calculations.  The rule is to NOT round anything until you get to your final answer.\r<BR>\n" );
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document.write( "So, you should have had 1.875 minutes for all of Wanda's laps and for Fred's lap #2.  0.25/8 = 0.03125.  0.03125 * 60 = 1.875.\r<BR>\n" );
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document.write( "Then for Fred's lap #1, .25/10 = 0.25.  0.25 * 60 = 1.5, and Lap #3, .25/6 approx. 0.04166 (close enough).  0.01466 * 60 = 2.5.\r<BR>\n" );
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document.write( "3 times 1.875 is 5.625 whereas 1.5 + 1.875 + 2.5 = 5.875 and 5.875 minus 5.625 is 0.25 which rounds to 0.3 minutes.\r<BR>\n" );
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document.write( "John<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE e^{i\pi}\ +\ 1\ =\ 0\"><BR>\n" );
document.write( "<font face=\"Math1\" size=\"+2\">Egw to Beta kai to Sigma</font><BR>\n" );
document.write( "My calculator said it, I believe it, that settles it<BR>\n" );
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