document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1063047>Question 1063047</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Helper A can do cleaning of a room in 30 minutes. Helper B can do it in 20 minutes. Both helpers are needed to clean the room. How much time they will speed in the process? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #678060 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=678060\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> working together Helper A and B will take x minutes, then<BR>\n" );
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document.write( "(1/30) + (1/20) = (1/x)<BR>\n" );
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document.write( "multiply both sides of the = by 60<BR>\n" );
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document.write( "2 + 3 = 60/x<BR>\n" );
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document.write( "5x = 60<BR>\n" );
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document.write( "x = 12<BR>\n" );
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document.write( "Working together Helper A and B take 12 minutes<BR>\n" );
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