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:
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document.write( "a)3
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document.write( "b)5
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document.write( "c)7
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document.write( "d)11 \n" );
document.write( "
Algebra.Com's Answer #257633 by mananth(16946)![]() ![]() 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( " |