SOLUTION: Barry can do a certain job in 6 hours, whereas it takes Samuel 9 hours to do the same job. How long would it take them to do the job working together?
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Question 792405: Barry can do a certain job in 6 hours, whereas it takes Samuel 9 hours to do the same job. How long would it take them to do the job working together? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Barry can do a certain job in 6 hours, whereas it takes Samuel 9 hours to do the same job. How long would it take them to do the job working together?
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Barry rate:: 1/6 job/hour
Sam rate:::: 1/9 job/hour
Together rate: 1/x job/hour
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Equation:
rate + rate = together rate
1/6 + 1/9 = 1/x
9x + 6x = 54
15x = 54
x = 3.6 hours = 3hrs 36 minutes
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Cheers,
Stan H.
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