A manager wants to assign tasks to workstations as efficiently as possible, and achieve an hourly output of 4 units. The department uses a working time of 56 minutes per hour. Assign the tasks shown in the accompanying precedence diagram (times are in minutes) to workstations using the greatest positional weight method. For your line balancing output, what is the \% idle time in two decimal points? (without the \% sign e.g. put 12.13 if your answer is 12.13% )