# Chapter 2 Assignment questions and answers

Pages: 4 (623 words) Published: February 23, 2015
﻿Chapter 2 Assignment questions and answers

1. A jewelry store makes necklaces and bracelets from gold and platinum. The store has 20 ounces of gold, 24 ounces of platinum. Each necklace requires 6 ounces of gold 3 ounces of platinum, whereas each bracelet requires 2 ounces of gold and 5 ounces of platinum. The store has to use a minimum of two ounces of gold. The demand for bracelet is no less than three. A necklace earns \$375 in profit and a bracelet, \$225. Formulate a linear programming model for this problem with an appropriate objective function

=number of necklaces to be made
= number of bracelets to be made
Maximize Profit (Z)=
Subject to
Maximum availability of gold
Minimum usage quantity of gold
Maximum availability of platinum
Minimum bracelet required
(Non-negativity constraint)

2. A furniture store makes tables and chairs from plywood and glass. The store has 30 units of plywood, 24 units of glass. Each table requires 7 units of plywood three units of glass, whereas each chair requires three units of plywood and two units of glass. The demand for chairs is between 2 and 4. The ratio between the table and chair is 1 to 2. A table earns \$225 in profit and a chair, \$145. The store wants to determine the number of tables and chairs to make in order to maximize profit. Formulate a linear programming model for this problems

=number of tables to be made
= number of chairs to be made
Maximize Profit (Z)=
Subject to
Maximum availability of plywood
Maximum availability of glass
Minimum chair required
Maximum chair required
Ratio constraint for table to chair
(Non-negativity constraint)

3. A fertilizer company makes a fertilizer using two chemicals that provide Zinc, phosphate and potassium. A pound of ingredient1 contributes 10 ounces of Zinc and 6 ounces of phosphate and one ounce of potassium while a pound of ingredient2 contributes two ounces of Zinc and 6 ounces of phosphate and 2 ounces of potassium....