document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=773527>Question 773527</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Mr. B can wash his car in 15 minutes, while his son takes twice as<BR>\n" );
document.write( "long to do the same job. If they work together, how many minutes<BR>\n" );
document.write( "will the job take them? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #471616 by </B><A HREF=/tutors/aboutme.mpl?userid=Cromlix><B>Cromlix(4381)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Cromlix><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=Cromlix><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=471616\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Mr B does the job in 1/15 job per minute<BR>\n" );
document.write( "His Son can do the job in 1/30 job per minute.<BR>\n" );
document.write( "Together rate = 1/x job/min<BR>\n" );
document.write( "1/15 + 1/30 = 1/x<BR>\n" );
document.write( "Common Denominator = 30x<BR>\n" );
document.write( "2x + x = 30<BR>\n" );
document.write( "3x = 30<BR>\n" );
document.write( "x = 10<BR>\n" );
document.write( "So, together they can do the <BR>\n" );
document.write( "job in 10 minutes.<BR>\n" );
document.write( "Hope this helps.<BR>\n" );
document.write( ":-)<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );