document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=184097>Question 184097</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A worker can cover a parking lot with asphalt in 10 hours. With the help of an assistant, the work can be done in 6 hours. How long would it take the assistant, working alone, to cover the parking lot with asphalt?\r<BR>\n" );
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document.write( "worker a 10(1/10)<BR>\n" );
document.write( "worker b t(1/6)<BR>\n" );
document.write( "10(1/10)=t(1/6)<BR>\n" );
document.write( "I think I am setting the problem up wrong. Thank you. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #138101 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=138101\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A worker can cover a parking lot with asphalt in 10 hours. With the help of an assistant, the work can be done in 6 hours. How long would it take the assistant, working alone, to cover the parking lot with asphalt? <BR>\n" );
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document.write( "To add the efforts, you have to get them in the same units.  One person does the job in 10 hours, so he does 1/10 of the job per hour.<BR>\n" );
document.write( "The other person does 1/6 of the job per hour.<BR>\n" );
document.write( "Add 1/10 and 1/6<BR>\n" );
document.write( "1/10 + 1/6 = 3/30 + 5/30 = 8/30 together.<BR>\n" );
document.write( "So the job take 30/8 hour = 15/4 or 3.75 hours.<BR>\n" );
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document.write( "A shortcut to this type of problem (with 2 only, not 3 or more) is<BR>\n" );
document.write( "product/sum<BR>\n" );
document.write( "6*10/(6+10) = 60/16 = 15/4 same answer. </SPAN>\n" );
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