SOLUTION: Two teams of workers have to do a job in 6 days.After that the firstteam worked 5 days , the second team joins the first one and the two teams worked 4 more days to comlete the job
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-> SOLUTION: Two teams of workers have to do a job in 6 days.After that the firstteam worked 5 days , the second team joins the first one and the two teams worked 4 more days to comlete the job
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