Consider a batch process with two stations. Each station can handle a batch size of up to 100 units. Station 1 has a processing time of 2 minutes per unit, and no setup time. Station 2 has a setup time of 20 minutes per batch, and a processing time of 1 minute per unit. Processing units for a batch in Station 2 may only start when all the units in the same batch have been processed in Station 1. In contrast, set up for a batch in Station 2 may being before that time.

1. The flow time of an order of 100 units if it is processed as a single batch (of size 100 units) is ____ minutes.

2. If instead, the same order is processed in 2 batches of size of 50 units each, the flow time would be ____ minutes.

3. If instead, the same order is processed in 5 batches of size of 20 units each, the flow time would be ____ minutes.

4. Finally, if instead, the same order is processed in 10 batches of size of 10 units each, its flow time would be ____ minutes.