There are 41 employees in a company, who work in three shifts. The first group of 6 employees work from 10:00 AM to 02:00 PM. The second group of 16 employees work from 12:00 PM to 03:00 PM. The third group of 19 employees work from 02:00 PM to 03:00 PM. If there are only 9 computers, during what time are the computers likely to be used most?
Some workers are painting a hall with length, breadth and height of 50 m, 50 m and 8 m respectively. If they can paint 100 m2 area from one liters of paint, find the amount of paint required to paint the walls and ceiling of hall.