Reference no: EM1315478
Q1) A plant in developing country can produce 5 different products in any combination. Each product needs time on each of these machines, as listed in the table below. Every figures are in minutes per pound of product.
|
Machine-Time (min/lb)
|
Product
|
1
|
2
|
3
|
A
|
12
|
8
|
5
|
B
|
7
|
9
|
10
|
C
|
8
|
4
|
7
|
D
|
10
|
0
|
3
|
E
|
7
|
11
|
2
|
Each machine is available 128 hours per week. Products A, B, C, D, and E are merely competitive, and any amounts made may be sold at per pound prices of= $5, $4, $5, $4 and $4 respectively. Variable labour costs are= $4 per hour for machine 1 and 2, and $3 per hour for machine 3. Material costs are= $2 for each pound of products A and C, and $1 for each pound of products B, D and E. Management wants to maximize profit to firm. Solver LP solution and sensitivity.
(a) What is Excel formula in B9 giving first value of coefficient in the objective function?
(b) How many hours are spent on each of 3 machines and what are the units of shadow prices on constraints which control machine capacity?
(c) How much must the firm be willing to spend to get another hour of time on machine 2?
(d) How much can sales price of product A rise before the optimal production changes?