SOLUTION: It takes 2 persons 3 hours to complete a job, if you add a third person to the job next time, how long would take to complete the job?
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Question 429593: It takes 2 persons 3 hours to complete a job, if you add a third person to the job next time, how long would take to complete the job? Answer by ewatrrr(24785) (Show Source):
Hi
It takes 2 persons 3 hours to complete a job,
each of them completing 1/2 of the job in 3 hrs OR 1/6 of the job per hour
3 people *1/6 of the job/hr = 1/2 the job per hour...
would take the three of them 2hrs to complete the job
