document.write( "Question 147660: first let me thank you all for your help. my problem is A,B and C can finish a job in 6 days if B and C work together the job will take 9 days if A and C work together the job will take 8 days in how many days can each man working alone do the job? again thank very much for your help \n" ); document.write( "
Algebra.Com's Answer #108030 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! first let me thank you all for your help. my problem is A,B and C can finish a job in 6 days if B and C work together the job will take 9 days if A and C work together the job will take 8 days in how many days can each man working alone do the job? \n" ); document.write( "---------------------------- \n" ); document.write( "Let the alone time for each be a, b, and c \n" ); document.write( "Then their respective rates are 1/a, 1/b, and 1/c \n" ); document.write( "---------------------------- \n" ); document.write( "EQUATION: \n" ); document.write( "1/a + 1/b + 1/c = 1/6 \n" ); document.write( "0 + 1/b + 1/c = 1/9 \n" ); document.write( "1/a + 0 + 1/c = 1/8 \n" ); document.write( "---------------------- \n" ); document.write( "Solve the system by any means to get : \n" ); document.write( "1/a = 1/18 \n" ); document.write( "1/b = 1/24 \n" ); document.write( "1/c = 5/72 \n" ); document.write( "----------- \n" ); document.write( "Then: \n" ); document.write( "a would take 18 days \n" ); document.write( "b would take 24 days \n" ); document.write( "c would take 72/5 = 14 2/5 days \n" ); document.write( "========================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |