document.write( "Question 1103606: A can do certain task in 8 hours, B in 10 hours and C in 12 hours. How long will it take to do the task if A and B work 1 hour and then A and C finish the task? \n" ); document.write( "

Algebra.Com's Answer #718296 by ikleyn(52794) $\"\"$ $\"About$

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document.write( "Rate of work of A is  of the job per hour; of B is  and of C  of the job per hour.\r\n" );
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document.write( "When A and B worked together for 1 hour, they completed  =  =  of the job.\r\n" );
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document.write( "Hence,  =  of the work remained uncompleted.\r\n" );
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document.write( "The combined rate of work for B and C is  =  = .\r\n" );
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document.write( "So, the answer to the problem question is this ratio   =  =  =  hours =  hours.\r\n" );
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