Question

In: Operations Management

A firm need to produce the following number of units during the next three months; month...

A firm need to produce the following number of units during the next three months; month 1, 200 units; month 2, 300 units; month 3, 300 units. For each unit produced during months 1 and 2, a $9 variable cost is incurred; for each unit produced during month 3, a $12 variable cost is incurred. The inventory cost is $2.50 for each unit in stock at the end of a month. The cost of setting up for production during a month is $250. Units made during a month may be used to meet demand for that month or next month only. Assume that production during each month must be a multiple of 100. Given that the initial inventory level is 0 units, use dynamic programming to determine an optimal production schedule

Solutions

Expert Solution

Here the resttiction is given as the produced items to be used in thier current month or upto next month only

Case 1:

In this scenarion we produce the demand for month 1 and month 2 in Month 1 itself and requirement of Month 3 in Month 2

Price of producion=$9 (Moth 1&2) , $12 (Month 3)

Set up cost=$250

Holding cost=$2.50

Month 1 Month 2 Month 3
Demand 200 300 300
Production 200+300 =500 300 0
Cost

250 + 500*9+2.50 *300

=$5500

250 + 300*9+2.50 *300

=$3700

0

Total cost = 5500 +3700 =$9200

Here in Month 1 Holding costs For items produced for Month 2 is added Similarly For month 2 Holding costs for items produced for Month 3 is Included.

Case 2:

In this scenarion we produce the demand for month 1 in Month 1 itself and requirement of Month 2 & 3 in Month 2.

Price of producion=$9 (Moth 1&2) , $12 (Month 3)

Set up cost=$250

Holding cost=$2.50

Month 1 Month 2 Month 3
Demand 200 300 300
Production 200 300+300=600 0
Cost

250 + 200*9

=$2050

250 + 600*9+2.50 *300

=$6400

0

Total cost = 2050 +6400 =$8450

Case 3:

In this scenario production will be done to meet the demand of their respective months.

Price of producion=$9 (Moth 1&2) , $12 (Month 3)

Set up cost=$250

Holding cost=$2.50

Month 1 Month 2 Month 3
Demand 200 300 300
Production 200 300 300
Cost

250 + 200*9

=$2050

250 + 300*9

=$2950

250+300*12

=$3850

Total cost = 2050 +2950+3850 =$8850/-

Here we can see that case 2 is the most optimal production schedule with minimal cost.

Please like the answer, Thank you


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