SOLUTION: One worker takes 20 hours to do a job. A second worker can do the same job in 15 hours. When a third worker is a added it take the three of them 6 hours to do the job. How long wou
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-> SOLUTION: One worker takes 20 hours to do a job. A second worker can do the same job in 15 hours. When a third worker is a added it take the three of them 6 hours to do the job. How long wou
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Question 847302: One worker takes 20 hours to do a job. A second worker can do the same job in 15 hours. When a third worker is a added it take the three of them 6 hours to do the job. How long would it take the third worker to do the job? Answer by richwmiller(17219) (Show Source):
