Efforts of a project staffed with 5 workers is originally estimated at 40 person-months. However, after 4 months, only 40% of project was actually completed.
1. Compute the remaining efforts in person-months.
2. If you wanted to hire more workers to meet the completion schedule, how many should you hire?
3. If each new worker only works at 70% capacity and requires training that reduces the productivity of an experienced worker 20%, can the project meet the deadline in the remaining months?