Certain number of persons can complete a work in100 days. If 10 persons were less, it would have taken10 days more for the work to be completed. Number of persons in the beginning is :

Certain number of persons can complete a work in 100 days.If 10 persons were less,it would have taken 10 days more for the work to be completed.Number of persons in the beginning is:

A certain numbe rof persons can complete a task in 28 days. If there were 150 persons more. If would have taken 7 days less for the task to be completed . How many persons are there in the beginning ?

A certain number of persons can finish a task in 85 days. If there were 15 persons more. it would have taken 25 days less for the task to be completed. How many persons are there in the beginning?

A certain number of men can do a work in 60 days. If there were 8 men less it could be finished in 10 days more. How many men are there?

15 persons can complete a work in 60 days. If the number of persons is increased by 5, how many days earlier will the work get completed ?