#### Indigent1

##### New Member
Hi there. I am a student and i am trying to learn how to use Solver in order to answer part B of the following question. anyone willing to help? thank you.

5.*Gloddy Company makes three products in a single facility. These products have the following unit product costs:

Products
A B C
Direct material \$24.90 \$25.70 \$26.60
Direct labor (variable) \$13.30 \$17.10 \$15.70
Variable manufacturing overhead \$2.50 \$2.80 \$3.10
Fixed manufacturing overhead \$19.80 \$27.70 \$21.00
Unit product cost \$60.50 \$73.30 \$66.40
Additional data concerning these products are listed below:
Mixing minutes per unit 2.50 1.70 1.60
Selling price per unit \$71.50 \$87.90 \$83.00
Variable selling cost per unit \$2.30 \$1.90 \$3.80
Monthly maximum demand in units 1,000 3,000 3,000

The mixing machines are potentially the constraint in the production facility. A total of 10,800
minutes are available per month on these machines. Direct labor is a variable cost in this company.

Required - use linear programing with excel solver to find the solutions as to how many units of each project
can be produced given the constraints in demand for each product and the limited monthly machine minutes.
Save the three reports available in the solver.

a. How many minutes of mixing machine time would be required to satisfy demand for all three products?

Mixing minutes per unit 2.50 1.70 1.60
Monthly maximum demand in units 1,000 3,000 3,000
TOTAL Mixing minutes per unit 2,500 5,100 4,800
Maximum capacity = 10,800

b. How much of each product (rounded) should be produced to maximize net operating income?

Products
Relevant costs A B C
Selling price per unit \$71.50 \$87.90 \$83.00

Direct material \$24.90 \$25.70 \$26.60
Direct labor (variable) \$13.30 \$17.10 \$15.70
Variable manufacturing overhead \$2.50 \$2.80 \$3.10
Variable selling cost per unit \$2.30 \$1.90 \$3.80
Total variable cost per unit \$43.00 \$47.50 \$49.20

Contribution margin \$28.50 \$40.40 \$33.80

Calculation by minutes:
Mixing minutes per unit 2.50 1.70 1.60
Contribution margin per minute \$11.40 \$23.76 \$21.13

TOTAL Mixing minutes per month 2,500 5,100 4,800
Total contribution margin per unit per month \$28,500 \$121,200 \$101,400

Check and balance:
Monthly maximum demand in units 1,000 3,000 3,000
Contribution margin \$28.50 \$40.40 \$33.80
Contribution margin by unit calculation \$28,500 \$121,200 \$101,400

Constraint = Maximum capacity = 10,800

c. Up to how much should the company be willing to pay for one additional hour of mixing
machine time if the company has made the best use of the existing mixing machine capacity?

No more than the lowest amount of contribution margin. Since the lowest amount is \$11.40 per
minute, the company should not pay more than \$11.40 X 60, or \$684 per hour

### Excel Facts

How to change case of text in Excel?
Use =UPPER() for upper case, =LOWER() for lower case, and =PROPER() for proper case. PROPER won't capitalize second c in Mccartney

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