document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=275481>Question 275481</A>: <I><SPAN STYLE=\"word-break: break-all;\"> one type of air blower can fill a blimp in 6 hours working alone, while a second blower fills the same blimp in 9 hours working alone. how long will it take both blowers working together.I need to know exactly how you got to the conclusion, not just the answer which i know is 3 hours and 36 minutes. Thanks </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #200991 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=200991\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Get it into units that can be added:<BR>\n" );
document.write( "One blower does 1/6 of the job per hour.<BR>\n" );
document.write( "The other does 1/9 per hour.<BR>\n" );
document.write( "Together, they do 1/6 + 1/9 per hour.<BR>\n" );
document.write( "1/6 + 1/9 = 15/54 jobs/hour<BR>\n" );
document.write( "--> 54/15 hours per job<BR>\n" );
document.write( "= 3.6 hours or 3 hr 36 minutes<BR>\n" );
document.write( "----------------------<BR>\n" );
document.write( "Use the shortcut, product/sum<BR>\n" );
document.write( "6*9/(6+9) = 54/15 etc.<BR>\n" );
document.write( " </SPAN>\n" );
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