Question: Problem 4-17 (Algorithmic) Frandec Company manufactures, assembles, and rebuilds material handling equipment used in warehouses and distribution centers. One product, called a Liftmaster, is assembled

Problem 4-17 (Algorithmic)

Frandec Company manufactures, assembles, and rebuilds material handling equipment used in warehouses and distribution centers. One product, called a Liftmaster, is assembled from four components: a frame, a motor, two supports, and a metal strap. Frandecs production schedule calls for 5000 Liftmasters to be made next month. Frandec purchases the motors from an outside supplier, but the frames, supports, and straps may be either manufactured by the company or purchased from an outside supplier. Manufacturing and purchase costs per unit are shown.

Component

Manufacturing Cost

Purchase Cost

Frame

$32.00

$46.00

Support

$9.50

$13.00

Strap

$6.50

$7.50

Three departments are involved in the production of these components. The time (in minutes per unit) required to process each component in each department and the available capacity (in hours) for the three departments are as follows:

Department

Component

Cutting

Milling

Shaping

Frame

2.9

1.9

2.5

Support

1.2

1.5

2

Strap

0.8

1.5

Capacity (hours)

340

400

650

  1. Formulate and solve a linear programming model for this make-or-buy application. How many of each component should be manufactured and how many should be purchased?

Let

FM = number of frames manufactured

FP = number of frames purchased

SM = number of supports manufactured

SP = number of supports purchased

TM = number of straps manufactured

TP = number of straps purchased

Min

FM

+

BLANK? FP

+

BLANK? SM

+

BLANK? SP

+

BLANK? TM

+

BLANK?TP

s.t.

BLANK? FM

+

BLANK?SM

+

BLANK?TM

BLANK?

BLANK? FM

+

BLANK? SM

BLANK?

BLANK? FM

+

BLANK? SM

+

BLANK? TM

BLANK?

BLANK? FM

+

BLANK? FP

BLANK?

BLANK? SM

+

BLANK? SP

BLANK?

BLANK? TM

+

BLANK? TP

BLANK?

FM, FP, SM, SP, TM, TP 0

  1. If required, round your answers to the nearest whole number. If an amount is zero, enter "0"

Manufacture

Purchase

Frames

BLANK?

BLANK?

Supports

BLANK?

BLANK?

Straps

BLANK?

BLANK?

    1. What is the total cost of the manufacturing and purchasing plan? When required, round your answer to the nearest dollar. $ BLANK?
  1. How many hours of production time are used in each department? If required, round your answer to two decimal places.

Department

Hours of production time used

Cutting

BLANK? hours

Milling

BLANK? hours

Shaping

BLANK? hours

  1. How much should Frandec be willing to pay for an additional hour of time in the shaping department? If required, round your answers to the nearest whole number. If an amount is zero, enter "0". $ BLANK?
  1. Another manufacturer has offered to sell frames to Frandec for $40 each. Could Frandec improve its position by pursuing this opportunity? Yes Why or why not? If required, round your answers to the nearest cent. Because the current purchase price is $BLANK? . The reduced cost is $BLANK? which means that the solution may be improved if the cost is $BLANK? or below.
  2. PLEASE FILL IN ALL BLANKS

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