In: Operations Management
The Magnetron Company manufactures and markets microwave ovens. Currently, the company
produces two models: full-size and compact. Production is limited by the amount of labor
available in the general assembly and electronic assembly departments, as well as by the demand
for each model. Each full-size oven requires 2 hours of general assembly and 2 hours of
electronic assembly, whereas each compact oven requires 1 hour of general assembly and 3
hours of electronic assembly. In the current production period, there are 500 hours of general
assembly labor available and 800 hours of electronic assembly labor available.
In addition, the company estimates that it can sell at most 220 full-size ovens and 180 compact
ovens in the current production period. The earnings contribution per oven is $120 for a full-size
oven and $130 for a compact oven. The company would like to find an earnings-maximizing
production plan for the current production period.
Formulate the above problem as a linear optimization model and solve via Excel’s solver. Please
turn in both a written formulation and an Excel file with the solution.
PLEASE SHOW ME WHAT TO PUT IN LHS AND SOLVER AS IN WHAT FORMULAS???
I have the following so far but I DONT KNOW HOW TO SOLVE FOR LHS AND WHAT TO PUT IN SOLVER IN EXCEL:
Let the number of full size oven to be produced be F and number of compact size oven produced be C | |||||||||||
The objective function is: | |||||||||||
Full size oven | Compact size oven | ||||||||||
Maximize: 120F + 130C | 2 | 3 | |||||||||
subject to: | |||||||||||
1. 2 F + C <= 500; Hours of general assembly | |||||||||||
2. 2F + 3C <=800 ; Hours of electronic assembly | |||||||||||
3. F <= 220; Number of full size ovens that can be sold | |||||||||||
4. C <= 180; Number of compact size ovens that can be sold | |||||||||||
Full oven | Compact oven | ||||||||||
Optimal no to be made | 1 | 1 | |||||||||
Contribution | 120 | 130 | |||||||||
Total contribution | 250 | maximize | |||||||||
Constraints | LHS | RHS | |||||||||
General Assembly | 3 | 500 | |||||||||
Electronic Assembly | 5 | 800 | |||||||||
Demand of full ovens | 1 | 220 | |||||||||
Number of compact ovens | 1 | 180 | |||||||||
The following formulation format can be used.
Final solution
Full | Compact | ||||
No. of | 175 | 150 | |||
Profit | $120 | $130 | $40,500 | ||
Subject to, | |||||
General assembly | 2 | 1 | 500 | <= | 500 |
Electronic assembly | 2 | 3 | 800 | <= | 800 |
Demand for Full | 1 | 0 | 175 | <= | 220 |
Demand for Compact | 0 | 1 | 150 | <= | 180 |