6 men can complete the electric fitting in a building in 7 days. How many days will it take if 21 men do the job?

5 men can complete a job in 8 days. How many days will it take if 12 men do the job?

5 men can complete a job in 8 days. How many days will it take if 12 men do the job?

If 78 men can do a work in 140 days, in how many days will 42 men do the same work ?

12 men and 16 women can complete a jon in 5 days. 13 men and 24 women can complete the same job in 4 days. How long, in days, will 5 men and 10 women take to complete the same job?

22 men can complete a job in 16days. In how many days, will 32 men complete that job?

34 men can do a piece of work in 12 days . How many days will 51 men take to do it