Question # 2: The table below defines the precedence relationships and element times for a new model toy. If the annual demand is 120000 products, line efficiency is 90%, the factory works 2400 hours/year, and repositioning time = 0.08 min, ii) Work element Te (min) Precedence Constraint 1 0.2 2 633 - 0.3 1 3 0.2 1 0.3 1 5 0.5 2,3 6 0.15 4 7 0.25 5,6 9 10 868 0.5 6 0.1 7,8 0.2 9 i) Calculate the work content time Twe and the service time Ts (20 points) What is the theoretical minimum number of workstations required to minimize the balance delay under the assumption that there will be one worker per station? (20 points)