document.write( "Question 710489: Working together, Brad and Mike can complete a job in 3 hours. If it takes mike 5 hours to do the job alone,how long would it take Brad to do the job alone?
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document.write( "PLZ help \n" );
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Algebra.Com's Answer #437011 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Working together, Brad and Mike can complete a job in 3 hours. If it takes mike 5 hours to do the job alone,how long would it take Brad to do the job alone? \n" ); document.write( "------ \n" ); document.write( "Together rate:: 1/3 job/hr \n" ); document.write( "---------- \n" ); document.write( "Mike rate: 1/5 job/hr \n" ); document.write( "---- \n" ); document.write( "Brad rate: 1/x job/hr \n" ); document.write( "========================== \n" ); document.write( "Equation: \n" ); document.write( "rate + rate = together rate \n" ); document.write( "1/x + 1/5 = 1/3 \n" ); document.write( "---- \n" ); document.write( "15 + 3x = 5x \n" ); document.write( "2x = 15 \n" ); document.write( "x = 7.5 hrs (time for Brad to do the job alone) \n" ); document.write( "=============================================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "============= \n" ); document.write( " \n" ); document.write( " |