document.write( "Question 1121174: A and B working together can complete a job in 30 days. After they had both worked 18 days, however, A left and B finished the work in 20 more days. Find the time in which each can do the work alone. \n" ); document.write( "

Algebra.Com's Answer #736940 by ikleyn(52787) $\"\"$ $\"About$

You can put this solution on YOUR website!
.
\n" ); document.write( "

\r\n" );
document.write( "After A and B worked 18 days together, they made  =  of the job;  so,   of the job remained.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Then B completed this   of the job in 20 days - so, his rate of work is   =  =  of the job per day.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Thus they both have the combined rate of work    of the job per day working together, and the B's individual rate of work is  . \r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Hence, the A's rate of work is   -  =  -  =  = .\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Answer.  A can do the job in 75 days working alone.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "         B can do the job in 50 days working alone.\r\n" );
document.write( "

\r
\n" ); document.write( "\n" ); document.write( "Solved.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );