Solve it with the arena simulation program. A manufacturing process consists of four operations: milling, planing, drilling and checking. There are four milling, two planing, three drilling and one automatic control machines. Data on arrival and processing times are as follows: Time between arrivals Exponential Average=2 minutes Milling Triangle (8, 12, 14) Planing Smooth (6, 10) Piercing Normal Mean=5, standard deviation=1 Control Fixed 2 minutes 60% of jobs are Type1 and the rest are Type2 jobs. Type1 jobs go from milling operation to drilling and from there to control operation. Type2 jobs go to drilling after the planing operation and then to the control operation. Jobs do not pass the control operation with 10% probability. 50% of the defective jobs are sent to the head of the system and the rest is scrapped. Intermediate stock space in front of these machines is limited: Intermediate stock capacities are 8 in front of milling, 4 in front of planer, 6 in front of drilling and 3 in front of control. Jobs that cannot enter the queue due to the fullness of the intermediate stock areas are discarded from the system. Simulate 40 hours of operation of the system.