Read the passage given below and solve the questions based on it.
A team of N workers are selected to do a certain job. Each worker can individually complete the job in 10 days. The team follows the following procedure for any job:
The work is started by one person on the first day. Then, from the next day onwards, till the work is completed, everyday one new person joins the work.
The work is such that, on any day it starts at 9:00 am and stops at 5:30 pm with a 30-minutes break for lunch from 1:00 pm to 1:30 pm. At whatever stage a worker joins the work, he does not leave till the job is over.
Answer each question in this set independently of the other questions.
If the entire team works at only 50% efficiency, and the worker who is supposed to join on the last day does not report for work, then the work is completed