document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=228212>Question 228212</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A farmer working with his son needs 3 hours to plow a field. The farmer working alone can plow the field in 12 hours. How long would it take the son working alone to plow the field?\r<BR>\n" );
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document.write( "Please provide a detailed explanation of the steps taken in a problem like this. 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 #169456 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=169456\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A farmer working with his son needs 3 hours to plow a field. The farmer working alone can plow the field in 12 hours. How long would it take the son working alone to plow the field? <BR>\n" );
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document.write( "Together DATA:<BR>\n" );
document.write( "time = 3 hrs/job ; rate = 1/3 job/hr<BR>\n" );
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document.write( "Farmer DATA:<BR>\n" );
document.write( "time = 12 hrs/job ; rate = 1/12 job/hr<BR>\n" );
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document.write( "Son's DATA:<BR>\n" );
document.write( "time = x hrs/job ; rate = 1/x job/hr<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "rate + rate = together rate<BR>\n" );
document.write( "1/12 + 1/x = 1/3<BR>\n" );
document.write( "Multiply thru by 12x to get:<BR>\n" );
document.write( "x + 12 = 4x<BR>\n" );
document.write( "3x = 12<BR>\n" );
document.write( "x = 4 hrs (time the son requires to do the job alone)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.  </SPAN>\n" );
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