SOLUTION: A takes 20 days to complete a job X. B takes 30 days to complete the same job X. How many days will it take A and B when they work together to complete the job X?

Question 964934: A takes 20 days to complete a job X. B takes 30 days to complete the same job X. How
many days will it take A and B when they work together to complete the job X?
Answer by CubeyThePenguin(3113) (Show Source): You can put this solution on YOUR website!
A will finish 1/20th of the job in one day and B will finish 1/30th of the job in one day. Together, they will finish

of a job in one day, or 12 days to finish the entire thing.
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