any help appreciated

Question 1. The table below shows 10 work tasks (A-J) in an assembly precedence diagram. The cycle time is 1.1 minute. a) Construct the precedence diagram b) Determine the total work content time. c) Use the "Ranked Positional Weight" rule to assign work elements to stations. d) Calculate the efficiency and the balance delay of your solution. Work element or tasks Time (min) 0.5 Preceding F G, H, 20 marks A B 0.3 A 0.8 D 1.1 A E 0.6 B, C F 0.2 D G 0.7 E H 1.0 1 0.9 F J 0.4