document.write( "Question 925250: A and B do a job in 12 days . A did for 8 days then rest job was done by B in 20 days. Find individually A and B can do in how many days. \n" ); document.write( "
Algebra.Com's Answer #561552 by filmi101(1)\"\" \"About 
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1/a + 1/b = 1/12
\n" ); document.write( "8/a+ 20/b = 1
\n" ); document.write( "or we can write the equation as
\n" ); document.write( "12a+12b = ab
\n" ); document.write( "8a+ 20b = an
\n" ); document.write( "solving the equation we get a= 36 b= 18
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