document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=170479>Question 170479</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Jack usually mows his lawn in 7 hours. Marilyn can mow the same yard in 4 hours. How much time would it take for them to mow the lawn together?<BR>\n" );
document.write( "(Simplify your answer. Type and integer, proper fraction, or mixed number.)<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #125864 by </B><A HREF=/tutors/aboutme.mpl?userid=Mathtut><B>Mathtut(3670)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Mathtut><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=125864\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> so Jack can do 1/7 of the job per hour and Marlyn can do 1/4 of the job per hour<BR>\n" );
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document.write( "1/7(t)+1/4(t)=1(job)----->find common denominator---->28 --.so multiply by 28<BR>\n" );
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document.write( "4t+7t=28<BR>\n" );
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document.write( "11t=28<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28t=28%2F11%29 ALIGN=MIDDLE  ALT=\"highlight%28t=28%2F11%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >or 2 6/11 hours for both to mow the lawn<BR>\n" );
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