document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=548504>Question 548504</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a window washer can wash the windows on one side of a building in 112 working hours.with an assistant he can do the job in 63 hours.how many hours would the assistant need to do the job alone </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #357028 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=357028\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a window washer can wash the windows on one side of a building in 112 working hours.with an assistant he can do the job in 63 hours.how many hours would the assistant need to do the job alone<BR>\n" );
document.write( "---------------------<BR>\n" );
document.write( "washer rate = 1/112 job/hr<BR>\n" );
document.write( "assist rate = 1/x job/hr<BR>\n" );
document.write( "together rate = 1/63 job/hr<BR>\n" );
document.write( "------<BR>\n" );
document.write( "Equation:<BR>\n" );
document.write( "rate + rate = together rate<BR>\n" );
document.write( "1/112 + 1/x = 1/63<BR>\n" );
document.write( "----<BR>\n" );
document.write( "63x + 63*112 = 112x<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "49x = 63*112<BR>\n" );
document.write( "x = 144 hrs (time for the asst to do the job alone)<BR>\n" );
document.write( "==================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );