document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=248813>Question 248813</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A farmer working together with his son needs 3 hours to plow a field. The farmer working alone can plow the field in 4 hours. How long would it take the son working alone to plow the field?\r<BR>\n" );
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document.write( "I need the rate of work (R), the time of work (T) , and the work done (W)<BR>\n" );
document.write( "the equation is RT = W. \r<BR>\n" );
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document.write( "It would help if I am provided a detailed explanation </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #181290 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=181290\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Farmer does 1/4 the job in 1 hour.<BR>\n" );
document.write( "Both do 1/3 the job in 1 hr.<BR>\n" );
document.write( "Let the son do  1/x the job in 1 hr.<BR>\n" );
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document.write( "1/4 + 1/x = 1/3<BR>\n" );
document.write( "3x+12=4x multiply each side by 12x (LCM) to eliminate fractions.<BR>\n" );
document.write( "x=12 hrs it takes the son to do the job alone.<BR>\n" );
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document.write( "Ed </SPAN>\n" );
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