221  WorkRate1
1

Name : _________________

 

refresh

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



6 people can do a job in 9 days. How many days would it take if there were only 2 people?



28 people can do a job in 9 days. How many days would it take if there were only 4 people?



49 people can do a job in 8 days. How many days would it take if there were only 7 people?



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



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



21 people can do a job in 9 days. How many days would it take if there were only 7 people?



36 people can do a job in 8 days. How many days would it take if there were only 9 people?



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



15 people can do a job in 9 days. How many days would it take if there were only 5 people?



+(         )

 

(         )+

++[[          ]]++

221    16 27 63 56 60 ( 222 )   54 27 32 36 27 ( 176 )   [[ 398 ]]