A 6. Evaluate the efficiency of the balance derived using the formula Sum of task time (1) Efficiency Actual number of workstations (N) Workstations cycle time (C) 7. If efficiency is unsatisfactory, rebalance using a different decision rule. ILLUSTRATION 7: The MS 800 car is to be assembled on a conveyor belt, Five hundred cars are required per day. Production time per day is 420 minutes, and the assembly steps and times for the wagon are given below. Find the balance that minimizes the number of workstations, subject to eyele time and precedence constraints, Task Task time Description Tasks that in seconds) must precede A 45 Position rear axle support and hand fasten 11 Four screws to nuts Insert rear axle B D 50 Tighten rear axle support screws to nuts 15 Position front axle assembly and hand F 12 Fasten with four screws to nuts G 12 Tighten front axle assembly screws k7 12 Position rear wheel 1 and fasten hubcap 12 Position rear wheel 2 and fasten hubcap Position front wheel I and fasten hubcap F, G, H, 1 K Position front wheel 2 and fasten hubcap B A 9 E D H E E 89 J