document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=886484>Question 886484</A>: <I><SPAN STYLE=\"word-break: break-all;\"> an older computer requires 15 min longer to print the payroll than does a newer computer. together the computers can print the payroll in 10 min. find the time for the new computer working alone to print the payroll. \r<BR>\n" );
document.write( "\n" );
document.write( "I got 15 min. Is this right???  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #535929 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=535929\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> an older computer requires 15 min longer to print the payroll than does a newer computer. together the computers can print the payroll in 10 min. find the time for the new computer working alone to print the payroll.<BR>\n" );
document.write( "***<BR>\n" );
document.write( "x=time it takes new computer working alone to print the payroll.<BR>\n" );
document.write( "let 1/x=work rate of new computer<BR>\n" );
document.write( "1/(x+15)=work rate of older computer<BR>\n" );
document.write( "1/10=work rate working together<BR>\n" );
document.write( "..<BR>\n" );
document.write( "sum of indv work rates = work rate working together<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2Fx%2B1%2F%28x%2B15%29=1%2F10 ALIGN=MIDDLE  ALT=\"1%2Fx%2B1%2F%28x%2B15%29=1%2F10\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "lcd: x(x+15)<BR>\n" );
document.write( "x+15+x=(x^2+15x)/10<BR>\n" );
document.write( "10x+150+10x=x^2+15x<BR>\n" );
document.write( "x^2-5x-150=0<BR>\n" );
document.write( "solve for x by quadratic formula:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+ ALIGN=MIDDLE  ALT=\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "a=1, b=-5, c=-150<BR>\n" );
document.write( "ans:<BR>\n" );
document.write( "x=-3.63 (reject, x>0<BR>\n" );
document.write( "or <BR>\n" );
document.write( "x=4.13<BR>\n" );
document.write( "time it takes new computer working alone to print the payroll=4.13 min\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );