If a person completes (1/n)th part of the work in one day, then in how many days he will complete the whole work?
(n - 1)
n
n2
2n
He will take n days to complete the whole work.
If Raman completes 12 of a work in one day, how many days are required to complete the whole work?
A person can complete a job 120 days. He works alone on Day 1. On Day 2, he is joined by another person who also can complete the job in exactly 120 days. On Day 3, they are joined by another person of equal efficiency Like this, everyday a new person with the same efficiency joins the work. How many days are required to complete the job?___