2.1 Explain what is meant by a well-balanced assembly line and stipulate the advantages thereof. 2.2 The demand for fuel tanks at an assembly plant in Brits is 60 units in a day per 12-hour workday. The activities, activity times as well as the predecessor/s relationships are shown in the table below. 2.2.1 Construct a precedence diagram for the above table. 2.2.2 Calculate the minimum number of workstations required for the assembly line. 2.2.3 Assign tasks to the workstations to balance the line. Show full calculations including the cumulative station times and the unassigned station times. 2.2.4 Determine the total idle time of the assembly line