document.write( "Question 361208: A can do a piece of work in 20 days which B can do it in 12 days. B worked at it for 9 days. A can finish remaining work in:
\n" ); document.write( "a)3
\n" ); document.write( "b)5
\n" ); document.write( "c)7
\n" ); document.write( "d)11
\n" ); document.write( "

Algebra.Com's Answer #257633 by mananth(16946)\"\" \"About 
You can put this solution on YOUR website!
B does the job in 12 days
\n" ); document.write( "so he does 1/12 of the job in 1 day.
\n" ); document.write( "so he does 9/12 of the job in 9 days = 3/4 of the job.
\n" ); document.write( "balance job will be 1/4
\n" ); document.write( "...
\n" ); document.write( "A does the job in 20 days
\n" ); document.write( "so he does 1/20 of the job in 1 day.
\n" ); document.write( "1/4 of the job he will take
\n" ); document.write( "..
\n" ); document.write( "(1/4)/(1/20)
\n" ); document.write( "1/4 *20 =5 days
\n" ); document.write( "m.ananth@hotmail.ca
\n" ); document.write( "
\n" );