258  WorkRate1
 2

Name : _________________

  

refresh

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



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



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



24 people can do a job in 7 days. How many days would it take if there were only 4 people?



45 people can do a job in 10 days. How many days would it take if there were only 9 people?

10 people can do a job in 8 days. How many days would it take if there were only 2 people?



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



18 명의 일꾼들이 어떤일을 끝내는데 9 일이 걸린다. 만일 3 명의 일꾼들이 하면 며칠 걸려 끝내겠는가?



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



18 people can do a job in 6 days. How many days would it take if there were only 9 people?

+(         )

 

(         )+

++[[          ]]++
258    20 22 66 42 50 ( 200 )   40 50 54 45 12 ( 201 )   [[ 401 ]]