220  WorkRate1
2

Name : _________________

 

refresh

12 people can do a job in 10 days. How many days would it take if there were only 2 people?



14 people can do a job in 10 days. How many days would it take if there were only 2 people?



14 people can do a job in 12 days. How many days would it take if there were only 2 people?



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



35 people can do a job in 6 days. How many days would it take if there were only 7 people?



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



15 people can do a job in 7 days. How many days would it take if there were only 5 people?



18 명의 일꾼들이 어떤일을 끝내는데 12 일이 걸린다. 만일 9 명의 일꾼들이 하면 며칠 걸려 끝내겠는가?



12 people can do a job in 6 days. How many days would it take if there were only 4 people?



21 people can do a job in 10 days. How many days would it take if there were only 7 people?



+(         )

 

(         )+

++[[          ]]++

220    60 70 84 12 30 ( 256 )   36 21 24 18 30 ( 129 )   [[ 385 ]]