An operation uses 120 Kilos of a certain material each day. Material is transported in containers that hold 20 kilos each. The plant operates on an 8 hours/day. assume that the inefficient factor for 8 this operation is 0.25. If the manager wants to have the number of containers exactly 3 per day, what would be the cycle time for container of this machine operation in hours
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An operation uses 120 Kilos of a certain material each day. Material is transported in containers that hold 20 kilos each. The plant operates on an 8 hours/day. assume that the inefficient factor for 8 this operation is 0.25. If the manager wants to have the number of containers exactly 3 per day, what would be the cycle time for container of this machine operation in hours?
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- Two models of controlling boards. The 1" type has high specification for work from the 2nd type. The better type has a profit of 50S and the other 40$ per board. The 1 type of boards requiring five as much as the 2nd needs for production and the total production are 2000 boards, the first model requires 400 min to be complete and 700 min to the second model. Write this expression with LP equations to have the maximum profit with production of each model.A small mail order firm Seas Beginnings has one phoneline. An average of 60 people per hour call in orders, and ittakes an average of 1 minute to handle a call. Time between calls and time to handle calls are exponentially distributed.If the phone line is busy, Seas Beginnings can put up toc 1 people on hold. If c 1 people are on hold, a callergets a busy signal and calls a competitor (Air End). SeasBeginnings wants only 1% of all callers to get a busy signal. How many people should the company be able to put onhold?A make-to-order system is well described as a basic Erlang system with a single machine. The manager of the system wants to ensure that the expected turnaround time of any order (from its placement until its shipment to the customer), in days, is T. If orders arrive at a rate λ per day, derive an expression that prescribes the machine’s capacity (µ) as a function of T and λ . (Capacity is defined as the number of orders the machine can handle per day.) What happens to the required capacity when T is decreased to 0?
- A Printed Circuit Board (PCB) machine installs integrated circuits onto a board. Before starting to produce a board, the PCB machine requires a 16-minute setup. Once in production, the PCB machine requires only 0.19 minute per board. a. Currently, the PCB machine produces 525 boards between setups. Given this operating process, what is the capacity of the PCB machine (in boards per min)? b. Currently, the PCB machine produces 525 boards between setups. Given this operating process, what is the utilization of the PCB machine? c. Say the PCB machine produces 400 boards s between setups and demand is 2 boards per minute. Given the operating process, what is the avergae inventory of boards anf the PCB machine? d. Demand for boards occurs at the rate of 2 boards per minute. What is the smallest batch size such that the PCB machine does not constrain the flow rate through the process?The school of business has 3 fax machines. The toner in each machine needs to be changed after about 5 hours of use. There is one unit secretary who is responsible for the fax machine maintenance. It takes him 15 minutes to replace the toner cartridge. What is the probability the system is empty?The question comes out of my "Practical Operations Management's" textbook. Tube Country rents circular rubber rafts that its customers use to float down the Ichituckni River. Tube Country owns a fleet of 200 rafts, each of which is returned on the same day it is rented, and each raft can only be rented once during a business day. Rough water along the Ichituckni River often causes rafts to become scratched and leak air, so the staff at Tube Country is constantly repairing rafts before their next rental. As a result, Tube Country estimates that 5% of its rental fleet is unavailable for rent at any given time. Tube Country rents rafts for $5 each, and incurs $1.00 in variable costs with each raft rental. Tube Country must also pay $20,000 in fixed business costs annually. What is the daily effective capacity of Tube Country’s fleet? The issue of rough water creating the need for continual repairs can best be described as what? Suppose Tube Country rents 100 rafts on a certain day.…
- The question comes out of my "Practical Operations Management's" textbook. Tube Country rents circular rubber rafts that its customers use to float down the Ichituckni River. Tube Country owns a fleet of 200 rafts, each of which is returned on the same day it is rented, and each raft can only be rented once during a business day. Rough water along the Ichituckni River often causes rafts to become scratched and leak air, so the staff at Tube Country is constantly repairing rafts before their next rental. As a result, Tube Country estimates that 5% of its rental fleet is unavailable for rent at any given time. Tube Country rents rafts for $5 each, and incurs $1.00 in variable costs with each raft rental. Tube Country must also pay $20,000 in fixed business costs annually. How many rentals does Tube Country need to break even each year? How many rentals does Tube Country need to make in a year to earn $5,000 in profit? Last year, the owner of Tube Country, Mr. Robert “Bobber” Gowdy, had…During a typical Friday, the West End Donut Shop serves 2400 customers duringthe 10 hours it is open. A customer spends, on average, 5 minutes in the shop. On average,how many customers are in the shop simultaneously?Each hour, 100 students want to ride a bus from the student union to Fraternity Row. The admiration places a value of $5/student/hour on each hour that a student is forced to wait for a bus. It costs university $ 10 per bus to send a bus from the student union to Fraternity Row. Assuming that demand occurs at a constant rate, how many buses should be sent each hour from the student union to Fraternity Row?
- 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. if Yum and Yee operates with a batch size of 10 units, what is the ultilization of the work (assume there is ample demand)?…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. What is the setup time of this process? answer:_______minutesThe 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 3.1 minutes. For each additional order in the batch, it takes 0.6 minute more to cook. Thus, cooking two orders in a batch takes 3.7 minutes, cooking three orders takes 4.3 minutes, and so on. The other process is bagging and accepting payments (done by a separate person), which takes 0.9 minute per order. The Yum and Yee food truck near the business school serves customers during lunch hour by taking orders and making fresh batches…