document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=135287>Question 135287</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0321131940/algebrahomeworkh>Basic Technical Mathematics with Calculus</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> If one riveter can do a job in 12 days, and a second riveter can do it in 16 days, how long would it take them to do it together? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #99106 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=99106\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let x=amount of time needed for both working together<BR>\n" );
document.write( "One riviter works at the rate of 1/12 job per day\r<BR>\n" );
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document.write( "The second riviter works at the rate of 1/16 job per day\r<BR>\n" );
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document.write( "Together they work at the rate of 1/12  +  1/16 job per day, or\r<BR>\n" );
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document.write( "4/48  + 3/48 = 7/48 of the job per day.  So our equation to solve is:\r<BR>\n" );
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document.write( "(7/48)x=1  (1 job, that is)  multiply each side by 48\r<BR>\n" );
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document.write( "7x=48  divide both sides by 7\r<BR>\n" );
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document.write( "x=6 6/7 days or 6.8571 days\r<BR>\n" );
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document.write( "Hope this helps  -----ptaylor </SPAN>\n" );
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