Question : A group of men decided to do a job in 13 days but 9 men left the work after each day. The work, as a result, was completed in 16 days. How many men were initially in the group?

Question : A group of men decided to do a job in 11 days but 16 men left the work after each day. The work, as a result, was completed in 15 days. How many men were there initially in the group?

Question : 15 men take 20 days to complete a job, working 8 hours a day. The number of hours a day that 20 men should take to complete the job in 12 days.

Question : A group of college students had decided to complete a project in 10 days. As 2 students dropped out every day, the project was completed at the end of the 15th day. The number of students at the beginning of the project was:

Question : If 90 men can do a certain job in 16 days, working 12 hours per day, then the part of that work which can be completed by 70 men in 24 days, working 8 hours per day is: