document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=148739>Question 148739</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A plumber can install a dishwasher in 50 minutes. If the plumber brings his apprentice to help, the job takes 40 minutes. How long would it take the apprentice working alone to install the dishwasher? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #109068 by </B><A HREF=/tutors/aboutme.mpl?userid=mangopeeler07><B>mangopeeler07(462)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mangopeeler07><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=109068\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A plumber can install a dishwasher in 50 minutes.<BR>\n" );
document.write( "So plumber=1/50\r<BR>\n" );
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document.write( "because he installs 1/50 of a dishwasher in 1 minute\r<BR>\n" );
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document.write( "apprentice=x, because we don't know\r<BR>\n" );
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document.write( "plumber and apprentice=1/40\r<BR>\n" );
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document.write( "because together they install 1/40 of a dishwasher in 1 minute\r<BR>\n" );
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document.write( "1/50 + x/1=1/40\r<BR>\n" );
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document.write( "Common denominator<BR>\n" );
document.write( "4/200 + 200x/200 = 5/200\r<BR>\n" );
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document.write( "4+200x=5\r<BR>\n" );
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document.write( "200x=1\r<BR>\n" );
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document.write( "x=1/200\r<BR>\n" );
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document.write( "So the apprentice can install 1/200 of a dishwasher in 1 minute<BR>\n" );
document.write( "So in 200 minutes.\r<BR>\n" );
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document.write( "3 hours and 20 minutes\r<BR>\n" );
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document.write( " </SPAN>\n" );
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