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27 people can do a job in 12 days. How many days would it take if there were only 9 people?



40 people can do a job in 11 days. How many days would it take if there were only 8 people?



4 people can do a job in 11 days. How many days would it take if there were only 2 people?



12 people can do a job in 6 days. How many days would it take if there were only 6 people?



18 people can do a job in 8 days. How many days would it take if there were only 3 people?

35 people can do a job in 6 days. How many days would it take if there were only 5 people?



24 people can do a job in 5 days. How many days would it take if there were only 6 people?



40 명의 일꾼들이 어떤일을 끝내는데 6 일이 걸린다. 만일 8 명의 일꾼들이 하면 며칠 걸려 끝내겠는가?



36 people can do a job in 9 days. How many days would it take if there were only 9 people?



16 people can do a job in 12 days. How many days would it take if there were only 4 people?

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