In this manufacturing process there are four tasks. Julia performs task 1, which is using a machine to cut out the scrub pattern from the fabric. She performs task 1 on every scrub set in a batch. Then, Hamsa sets up a different sewing machine before performing task 2, sewing the scrubs together, on every unit in the batch. After that, either Carlos or Shazil perform the third task of sorting the scrubs into sets and folding each of the scrub sets. Finally, Karen does task 4 which is placing the scrub set in the shipping package. Tasks 3 and 4 are done by the workers only so they do not require any setups.

Using the current production batch size of 35 units, how long would it take to produce a batch starting with an empty system (with no setup done)? Assume that all the units in the batch must stay together (no smaller transfer batches allowed) when transferred to either Carlos or Shazil, who then processes the entire batch (the batch cannot be divided among the two workers). Also, all theunits must stay together when transferred from either Carlos or Shazil to Karen.

Batching Consider the following process for manufacturing scrubs: 3 1 2 (Carlos 4 (Julia, (Hamsa, machine 1) machine 2) 3 (Karen) (Shazil) The setup time and production time per unit of each task is as follows: Task Setup time Time per unit (in mins) (in mins) 0 18 2 40 8 3 0 5 4 0 3