The Yum and Yee food truck near the business school serves customers during lunchhour by taking orders and making fresh batches of stir-fry. Customers have only onechoice during the lunch hour so that Y&Y can maximize the number of customers served.Assume that each customer places just one lunch order, and all lunch orders are the samesize: one unit of stir-fry. The stir-fry cooking works in this manner. First, one personcooks a batch of orders in a wok. The cooking depends upon the number of orders in thebatch. The time to cook just one order is 3 minutes. For each additional order in the batch,it takes 0.5 minute more to cook. Thus, cooking two orders in a batch takes 3.5 minutes,cooking three orders takes 4 minutes, and so on. The other process is bagging and accepting payments (done by a separate person), which takes 0.80 minute per order.a. What is the setup time of this process?b. If Y&Y operates with batch sizes of 6 units, what is their process capacity (in ordersper minute)?c. If Yum and Yee operates with batch sizes of 10 units, what is the utilization of thewok?d. Calculate the batch size (in orders) that maximizes the overall flow rate (assume thereis ample demand)? Do NOT round the batch size (i.e., assume for this calculation thata noninteger batch size is possible).
The Yum and Yee food truck near the business school serves customers during lunch
hour by taking orders and making fresh batches of stir-fry. Customers have only one
choice during the lunch hour so that Y&Y can maximize the number of customers served.
Assume that each customer places just one lunch order, and all lunch orders are the same
size: one unit of stir-fry. The stir-fry cooking works in this manner. First, one person
cooks a batch of orders in a wok. The cooking depends upon the number of orders in the
batch. The time to cook just one order is 3 minutes. For each additional order in the batch,
it takes 0.5 minute more to cook. Thus, cooking two orders in a batch takes 3.5 minutes,
cooking three orders takes 4 minutes, and so on. The other process is bagging and accepting payments (done by a separate person), which takes 0.80 minute per order.
a. What is the setup time of this process?
b. If Y&Y operates with batch sizes of 6 units, what is their process capacity (in orders
per minute)?
c. If Yum and Yee operates with batch sizes of 10 units, what is the utilization of the
wok?
d. Calculate the batch size (in orders) that maximizes the overall flow rate (assume there
is ample demand)? Do NOT round the batch size (i.e., assume for this calculation that
a noninteger batch size is possible).
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