Francis Johnson's plant needs to design an efficient assembly line to make a new product. The assembly line needs to produce 30 units per hour, and there is room for only five workstations. The tasks and the order in which they must be performed are shown in the following table. Tasks cannot be split, and it would be too expensive to duplicate any task. TASK TIME IMMEDIATE TASK (MINUTES) PREDECESSOR A 1.0 B 8.5 C 8.5 D 2.0 A, B, C E 1.0 C F 2.0 E G 2.0 E b. What is the workstation cycle time. In minutes? (Round your answer to 1 decimal place.) Workstation cycle time minutes d. What is the efficiency of your line balance? Use the theoretical minimum number of workstations in your calculation. (Round your answer to 1 decimal place.)