150 workers were engaged to finish a piece of work in a certain number of days. Four wirkers dropped from the work in the second day. Four workers dropped in third day and so on. It took 8 more days to finish the work. Find the number of days in which the work was completed.

24 workers working 6 hours a day can finish a piece of work in 14 days.if each worker works 7 hours a day, find the number of workers to finish the same piece of work in 8 days.

If x + 1 men will do the work in x + 1 days, find the number of days that (x+2) men can finish the same work.

A and B together can finish a piece of work in 12 days. If 'A' alone can finish the same work in 20 days, how many days B alone can finish it ?

24 men working at 8 hours per day can do a piece of work in 15 days. In how many days can 20 men working at 9 hours per day can complete the same work?

Kavitha thought of constructing 2 more rooms in her house. She enquired about the labour. She came to know that 6 men and 8 women could finish this work in 14 days. But she wish to complete that work in only 10 days. When she enquired, she was told that 8 men and 12 women could finish the work in 10 days. Find out the how much time would be taken to finish the work if one man or one woman worked alone.

If there are 5 perids in each working day of a school , then the number of ways that you can arrage 4 subjects during the working day is

36 men can do a piece of work in 12 days. In how many days 9 men can do the same work?

A take 5 days less than the time taken by B to finish a piece of work. If both A and B together can finish it in 6 days, find the time taken by B to finist the work.