document.write( "Question 37864: One person can do a job in 8 hours. A second person can do it in 12 hours. if the first person works 2 hours less than the second, how many hours will it take them working together?
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document.write( "write an algerair solution. let x= length of time first person works and x+2= length of time second works \n" );
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Algebra.Com's Answer #23369 by fractalier(6550)![]() ![]() You can put this solution on YOUR website! Using t for time, we have \n" ); document.write( "t/8 + (t + 2)/12 = 1 (we use 1 for one job) \n" ); document.write( "Now multiply all by 24 (the LCD) and get \n" ); document.write( "3t + 2(t + 2) = 24 \n" ); document.write( "5t + 4 = 24 \n" ); document.write( "5t = 20 \n" ); document.write( "t = 4 \n" ); document.write( "The 1st person works 4 hrs and the second works 6. \n" ); document.write( " |