document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1034411>Question 1034411</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve. Round to the nearest tenth of necessary\r<BR>\n" );
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document.write( "A certain computer can grade 2000 objective-answer exams in 10 sec. A new computer can grade the 2000 exams in less time. If the two computers together can grade 2000 exams in 3 sec, how long does it take the new computer alone to do the grading? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #649060 by </B><A HREF=/tutors/aboutme.mpl?userid=robertb><B>robertb(5830)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=robertb><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=robertb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=649060\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let x be the number of seconds it takes for the new computer to grade the 2,000 exams.  Then in 1 second,  1/x of the job is done.<BR>\n" );
document.write( "The older computer grades the 2,000 exams in 10 seconds. Hence in one second 1/10 of the job is done.\r<BR>\n" );
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document.write( "The combined rate is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2Fx+%2B+1%2F10 ALIGN=MIDDLE  ALT=\"1%2Fx+%2B+1%2F10\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "==> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3%281%2Fx+%2B+1%2F10%29+=+1 ALIGN=MIDDLE  ALT=\"3%281%2Fx+%2B+1%2F10%29+=+1\"   DISABLED_style= \"max-width:90%; height:auto;\" > ==> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3%2Fx+%2B+3%2F10+=+1 ALIGN=MIDDLE  ALT=\"3%2Fx+%2B+3%2F10+=+1\"   DISABLED_style= \"max-width:90%; height:auto;\" > ==> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3%2Fx+=+7%2F10 ALIGN=MIDDLE  ALT=\"3%2Fx+=+7%2F10\"   DISABLED_style= \"max-width:90%; height:auto;\" > ==> x = 30/7, or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+4%262%2F7 ALIGN=MIDDLE  ALT=\"x+=+4%262%2F7\"   DISABLED_style= \"max-width:90%; height:auto;\" > seconds. </SPAN>\n" );
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