document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=193115>Question 193115</A>: <I><SPAN STYLE=\"word-break: break-all;\"> jack mows the lawn in 7 hours and susie can mow the same lawn in 4 hours, how long would it take them to mow that lawn together? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #144956 by </B><A HREF=/tutors/aboutme.mpl?userid=RAY100><B>RAY100(1637)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=RAY100><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=144956\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let  x  =  total  job,,,  sq  ft  etc\r<BR>\n" );
document.write( "\n" );
document.write( "jacks  rate  is  ,,,,x/7,,,,Sues rate  is  x/4\r<BR>\n" );
document.write( "\n" );
document.write( "rate  *time  =  job\r<BR>\n" );
document.write( "\n" );
document.write( "x/7*t+x/4*t=x\r<BR>\n" );
document.write( "\n" );
document.write( "mult  by  28,,,,divide  by  x\r<BR>\n" );
document.write( "\n" );
document.write( "4t+7t=28\r<BR>\n" );
document.write( "\n" );
document.write( "11t=28\r<BR>\n" );
document.write( "\n" );
document.write( "t=28/11=2.55  hrs   ANSWER\r<BR>\n" );
document.write( "\n" );
document.write( "check<BR>\n" );
document.write( "x/7 *2.55+x/4*2.55=x<BR>\n" );
document.write( ".364x +.636x =x<BR>\n" );
document.write( "x=x   ok </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );