Of 25 persons are working on a project for 30 years. There is how many person-years of employement.: (A) 75, (B) 750, (C) 120, (D) 1200
Answer is B. Ans. is 'b' i.e., 750 "10000 people working for 1 year would lead to 1000 person years of employment"* Thus, 25 persons working for 30 years will lead to 750 person-years of employment.