document.write( "Question 905924: printing machine A can do printing in 8 hours. With the machine B the same printing would take 12 hours. It was decided that both machines will be used for the printing. However, after a while the machine A broke down. After that it took 6 hours to finish the printing with machine B. How many hours did the machine A print before it broke down? \n" ); document.write( "
Algebra.Com's Answer #549511 by josgarithmetic(39616)![]() ![]() ![]() You can put this solution on YOUR website! RATES JOB/HOUR \n" ); document.write( "Machine A, \n" ); document.write( "Machine B, \n" ); document.write( "CombinedAB, \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "RT=J Uniform Rate rule for doing a job\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The job is split into two time quantities. The combined machines part for unknown t time and then the machine B part which was 6 hours.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "2 hours 24 minutes, time that A and B worked together before A quit. \n" ); document.write( " |