A simple assembly line has 4 stations and performs the following tasks on each unit: Station-1 Station 2 Station 3 A(10 secs) B (20 secs) C (30 secs) Station 4 D(15 secs) A helper is added to Station-3. This helper will also take 30 seconds, so this move doubles the capacity at Station-3. The capacity of the assembly line is now: 240 units per hour 120 units per hour 180 units per hour 360 units per hour

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