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I'm working for my program for economy where I have an example I try to solve.


The flow rate is 0.15 units/min and

  • A - 1 server: flow time = 5, capacity = 0.2
  • B - 2 servers: flow time = 9, capacity = 0.22
  • C - 1 server: flow time = 6, capacity 0.17

I have to find the Theoretical flow time. If I follow Little law, I have to calculate current inventory for each server.

  • A = 0.75 units
  • B = 1.35 units
  • C = 0.90 units

So the next step is to calculate how much time is used for processing in each server.

  • A: we have 0.75 units and capacity is 0.2 so 0.75/0.2 = 3.75 minutes
  • B: as we have 2 servers here, it means that capacity * 2, so 3.06 minutes
  • C: 5.29 minutes

The theory is that theoretical flow time is the maximum, so A + B = 6.81 minutes. Is this correct?

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