The supervisor of ABC Corp. wishes to assign a number of workstations to an operator based on reducing the cost per unit of output. After studying the current set-up in the production floor, the following were gathered: Load machine standard time : 0.42 minute Unload Machine Standard Time : 0.17 minute Walk time between machines : 0.08 minute Operator Rate : $15/hr Machine Rate : $25/hr Power feed time : 2.43 minutes How many machines should be assigned to each operator?*

The supervisor of ABC Corp. wishes to assign a number of workstations to an operator based on reducing the cost per unit of output. After studying the current set-up in the production floor, the following were gathered: Load machine standard time : 0.42 minute Unload Machine Standard Time : 0.17 minute Walk time between machines : 0.08 minute Operator Rate : $15/hr Machine Rate : $25/hr Power feed time : 2.43 minutes How many machines should be assigned to each operator?*

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter4: Linear Programming Models

Section: Chapter Questions

Problem 111P

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The work cycle in a worker–machine system consists of (1) external manual work elements with a total normal time of 0.42 min, (2) a machine cycle with a machine time of 1.12 min, and (3) internal manual elements with a total normal time of 1.04 min. (a) Determine the standard time for the cycle, using a PFD allowance factor of 15% and a machine allowance factor of 30%. (b) How many work units are produced daily (8-hour shift) at standardperformance?
Rock View Restaurant is a new fast food restaurant chain. The Operations Manager has dividedits normal drive-through service process into the following tasks:Tasks Description Task Time(InSeconds)PredecessorsA Take order 25 NoneB Receive payment 20 AC Gather drinks 35 AD Gather food 32 AE Put food etc. in bag 25 C,DF Give food to customer 10 B,E Currently, Rock View Restaurant has a single window with one person who takes the order, gather the food, collects the money and gives the food to the customer. This takes an average of 147 seconds per customer so only 25.5 cars can be served.…
Rock View Restaurant is a new fast food restaurant chain. The Operations Manager has dividedits normal drive-through service process into the following tasks:Tasks Description Task Time(InSeconds)PredecessorsA Take order 25 NoneB Receive payment 20 AC Gather drinks 35 AD Gather food 32 AE Put food etc. in bag 25 C,DF Give food to customer 10 B,E Currently, Rock View Restaurant has a single window with one person who takes the order, gather the food, collects the money and gives the food to the customer. This takes an average of 147 seconds per customer so only 25.5 cars can be served.…
Karina Nieto works for New Products Inc., and one of hermany tasks is assigning new workers to departments. Thecompany recently hired six new employees and would likeeach one to be assigned to a different department. The em-ployees have completed a two-month training session ineach of the six departments from which they received theevaluations shown below (higher numbers are better).Determine how the new employees should be assigned todepartments so that overall performance is maximized.
Positively Rivet Inc. is a small machine shop that produces sheet metal products. It had one line dedicated to the manufacture of light-duty vent hood shells, but because of strong demand it recently added a second line. The new line makes use of higher-capacity automated equipment but consists of the same basic four processes as the old line. In addition, the new line makes use of one machine per workstation, while the old line has parallel machines at the workstations. The processes, along with their machine rates, number of machines per station, and average times for a lone job to go through a station (i.e., not including queue time), are given for each line in the following table: Process Old Line New Line Rate per Machine (parts/hour) # Machines per Station Time (minute) Rate per Machine (parts/hour) # Machines per Station Time (minute) Punching 15 4 4.0 120 1 0.50 Braking 12 4 5.0 120 1 0.50 Assembly 20 2 3.0 125…
Rock View Restaurant is a new fast food restaurant chain. The Operations Manager has divided its normal drive-through service process into the following tasks:Tasks Description Task Time(In Seconds)PredecessorsA Take order 25 NoneB Receive payment 20 AC Gather drinks 35 AD Gather food 32 AE Put food etc. in bag 25 C,DF Give food to customer10 B,ECurrently, Rock View Restaurant has a single window with one person who takes the order, gather the food, collects the money and gives the food to the customer. This takes an average of 147 seconds per customer so only 25.5 cars can be served. Rock View Restaurant wants to increase its drive-through capacity to 60 cars per hour by forming a multi-window line. Calculate the efficiency of the newly design process.
Rock View Restaurant is a new fast food restaurant chain. The Operations Manager has divided its normal drive-through service process into the following tasks:Tasks Description Task Time(In Seconds)PredecessorsA Take order 25 NoneB Receive payment 20 AC Gather drinks 35 AD Gather food 32 AE Put food etc. in bag 25 C,DF Give food to customer10 B,ECurrently, Rock View Restaurant has a single window with one person who takes the order, gather the food, collects the money and gives the food to the customer. This takes an average of 147 seconds per customer so only 25.5 cars can be served. Rock View Restaurant wants to increase its drive-through capacity to 60 cars per hour by forming a multi-window line. Using the LOT heuristic, assign the tasks to the windows to produce the desired service rate making sure that the precedence relationship is maintained.v. Calculate the efficiency of the newly design process
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A small firm intends to increase the capacity of a bottleneck operation by adding a new machine.Two alternatives, A and B, have been identified, and the associated costs and revenues have beenestimated. Annual fixed costs would be $40,000 for A and $30,000 for B; variable costs per unitwould be $10 for A and $11 for B; and revenue per unit would be $15.b. At what volume of output would the two alternatives yield the same profit?
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Rock View Restaurant is a new fast-food restaurant chain. The Operations Manager has dividedits normal drive-through service process into the following tasks: Tasks Description Task Time (In Seconds) Predecessors A Take Order 25 None B Receive payment 20 A C Gather drinks 35 A D Gather Food 32 A E Put food etc. In bag 25 C,D F Give food to Customer 10 B,E Currently, Rock View Restaurant has a single window with one person who takes the order,gather the food, collects the money and gives the food to the customer. This takes an average of147 seconds per customer so only 25.5 cars can be served. Rock View Restaurant wants toincrease its drive-through capacity to 60 cars per hour by forming a multi-window line.i. Using the LOT heuristic, assign the tasks to the windows to produce the desiredservice rate making sure that the precedence relationship is maintained.
Rock View Restaurant is a new fast-food restaurant chain. The Operations Manager has dividedits normal drive-through service process into the following tasks: Tasks Description Task Time (In Seconds) Predecessors A Take Order 25 None B Receive payment 20 A C Gather drinks 35 A D Gather Food 32 A E Put food etc. In bag 25 C,D F Give food to Customer 10 B,E Currently, Rock View Restaurant has a single window with one person who takes the order,gather the food, collects the money and gives the food to the customer. This takes an average of147 seconds per customer so only 25.5 cars can be served. Rock View Restaurant wants toincrease its drive-through capacity to 60 cars per hour by forming a multi-window line.1. Calculate the efficiency of the newly design process.