document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=196518>Question 196518</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A computer can process a company's payroll checks in 4 hours. A second computer, twice as fast is available. When the smaller computer has worked for 2 hours, the second faster machine is put on line. How much longer did it take the two machines working together to finish the payroll?\r<BR>\n" );
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document.write( "My equation:  1/4 + 2(1/4)=1/t/2\r<BR>\n" );
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document.write( "I not sure how to represent the fact the first machine has already completed half of the work.  \r<BR>\n" );
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document.write( "Combined the two computers can complete 3/4 of the work per hour\r<BR>\n" );
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document.write( "the first computer worked for 2hours completing 1/2 of work\r<BR>\n" );
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document.write( "  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #147277 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=147277\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> if t equals the time remaining,<BR>\n" );
document.write( "then t/4 is the fraction comleted by the first machine<BR>\n" );
document.write( "and t/2 is the fraction completed by the second machine\r<BR>\n" );
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document.write( "since the first machine has completed half the task, the sum of the fractions is 1/2<BR>\n" );
document.write( "t/4 + t/2 = 1/2\r<BR>\n" );
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document.write( "alternatively; looking at the whole task<BR>\n" );
document.write( "(t+2)/4 is the fraction completed by the 1st machine<BR>\n" );
document.write( "and t/2 is the fraction completed by the 2nd machine\r<BR>\n" );
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document.write( "(t+2)/4 + t/2 = 1\r<BR>\n" );
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document.write( "the two equations are equivalent </SPAN>\n" );
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