Balance the assembly line for the tasks contained in the table. The desired output is 240 units per day. Available production time per day is 480 minutes.

a) What is the desired Cycle time in seconds?
b) What is the theoretical minimum number of stations?
c) Use trial and error to work out a solution in the table below. Your efficiency should be at least 90%.
d) Calculate the efficiency of your solution.

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Work Time Immediate Predecessor(s) Element (Sec.) 40 45 55 55 65 40 C,D 25 D,E