document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=29587>Question 29587</A>: <I><SPAN STYLE=\"word-break: break-all;\"> need help plz...heres the question \"There are three friends named Allan, Bobby and Charlie. The three friends want to know their individual rate in finishing a job. Allan and Bobby can finish the job in 42 days, Bobby and Charlie can finish the job in 31 days, and Allan and Charlie can finish the job in 20 days. Solve the rate of each individual.\" </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #16715 by </B><A HREF=/tutors/aboutme.mpl?userid=venugopalramana><B>venugopalramana(3286)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=venugopalramana><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.geocities.com/venugopalramana/FREE_MATHS_ASSISTANCE.html valign=middle><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=16715\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> need help plz...heres the question \"There are three friends named Allan, Bobby and Charlie. The three friends want to know their individual rate in finishing a job. Allan and Bobby can finish the job in 42 days, Bobby and Charlie can finish the job in 31 days, and Allan and Charlie can finish the job in 20 days. Solve the rate of each individual.\"<BR>\n" );
document.write( "LET ALLAN TAKE A DAYS TO DO THE JOB ALONE<BR>\n" );
document.write( "HENCE ALLAN ALONE CAN DO IN 1 DAY 1/A JOB<BR>\n" );
document.write( "LET BOBBY TAKE B DAYS TO DO THE JOB ALONE<BR>\n" );
document.write( "HENCE BOBBY ALONE CAN DO IN 1 DAY 1/B JOB<BR>\n" );
document.write( "LET CHARLIE TAKE C DAYS TO DO THE JOB ALONE<BR>\n" );
document.write( "HENCE CHARLIE ALONE CAN DO IN 1 DAY 1/C JOB<BR>\n" );
document.write( "FROM ABOVE WE GET ...<BR>\n" );
document.write( "ALLAN AND BOBBY CAN DO IN 1 DAY ..1/A +1/B =(A+B)/AB JOB..<BR>\n" );
document.write( "SO DAYS THEY TAKE TO COMPLETE THE JOB =AB/(A+B)=42..OR..1/A+1/B=1/42..........I BOBBY AND CHARLIE CAN DO IN 1 DAY ..1/B +1/C =(B+C)/BC JOB..<BR>\n" );
document.write( "SO DAYS THEY TAKE TO COMPLETE THE JOB =BC/(B+C)=31..OR..1/B+1/C=1/31.........II<BR>\n" );
document.write( "ALLAN AND CHARLIE CAN DO IN 1 DAY ..1/A +1/C =(A+C)/AC JOB..<BR>\n" );
document.write( "SO DAYS THEY TAKE TO COMPLETE THE JOB =AC/(A+C)=20..OR..1/A+1/C=1/20........III<BR>\n" );
document.write( "EQNI+EQNII+EQNIII GIVES...<BR>\n" );
document.write( "2{(1/A)+(1/B)+(1/C)}=(1/42)+(1/31)+(1/20)<BR>\n" );
document.write( "(1/A)+(1/B)+(1/C)=(1/2)*{(1/42)+(1/31)+(1/20)}.........IV<BR>\n" );
document.write( "EQN.IV-EQN.I GIVES<BR>\n" );
document.write( "1/C= (1/2)*{(1/42)+(1/31)+(1/20)}-1/42....OR.....C=34.2 DAYS<BR>\n" );
document.write( "EQN.IV-EQN.II GIVES.......<BR>\n" );
document.write( "1/A=(1/2)*{(1/42)+(1/31)+(1/20)}- 1/31...OR......A=48.1 DAYS<BR>\n" );
document.write( "EQN.IV-EQN.III GIVES....<BR>\n" );
document.write( "1/B=(1/2)*{(1/42)+(1/31)+(1/20)}- 1/20....OR.....B=329.6 DAYS\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );