Please Explain

2) Amir Saleem, operations manager at Haier Electronics, prides himself on outstanding assembly-line balancing. He has been told that the Haier needs to complete 96 gadgets per 24-hour day. The assemblyline activities are: Task Time (min) Predecessors One 3 Two 6 Three 7 One Four 5 One , Two Five 2 Two Six 4 Three Seven 5 Six Eight 7 Four, Five Nine 1 Eight Ten 6 Five Eleven 4 Seven, Nine, Ten a) Construct the precedence diagram. b) Determine the highest allowable takt time, when the production the rate is 96 units? c) If the takt time after allowances is given as 10 minutes, what is the daily (24-hour) production rate? d) With a 10-minute takt time, what is the theoretical minimum number of work stations with which the line can be balanced