A farmer can buy two types of plant food, mix A and mix B. Each cubic yard of mix A contains 20 pounds of phosphoric acid, 30 pounds of nitrogen, and 5 pounds of potash. Each cubic yard of mix B contains 10 pounds of phosphoric acid, 30 pounds of nitrogen, and 10 pounds of potash. The minimum monthly requirements are 440 pounds of phosphoric acid, 960 pounds of nitrogen, and 200 pounds of potash. If mix A costs $30 per cubic yard and mix B costs $35 per cubic yard, how many cubic yards of each mix should the farmer blend to meet the minimum monthly requirements at a minimum cost? What is this cost? If mix A costs $30 per cubic yard and mix B costs $35 per cubic yard, the farmer should blend yd of mix A and yd3 of mix B to meet the minimum monthly requirements at a minimum cost.
A farmer can buy two types of plant food, mix A and mix B. Each cubic yard of mix A contains 20 pounds of phosphoric acid, 30 pounds of nitrogen, and 5 pounds of potash. Each cubic yard of mix B contains 10 pounds of phosphoric acid, 30 pounds of nitrogen, and 10 pounds of potash. The minimum monthly requirements are 440 pounds of phosphoric acid, 960 pounds of nitrogen, and 200 pounds of potash. If mix A costs $30 per cubic yard and mix B costs $35 per cubic yard, how many cubic yards of each mix should the farmer blend to meet the minimum monthly requirements at a minimum cost? What is this cost? If mix A costs $30 per cubic yard and mix B costs $35 per cubic yard, the farmer should blend yd of mix A and yd3 of mix B to meet the minimum monthly requirements at a minimum cost.
Algebra for College Students
10th Edition
ISBN:9781285195780
Author:Jerome E. Kaufmann, Karen L. Schwitters
Publisher:Jerome E. Kaufmann, Karen L. Schwitters
Chapter12: Algebra Of Matrices
Section12.CR: Review Problem Set
Problem 37CR
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Question
A farmer can buy two types of plant food, mix A and mix B. Each cubic yard of mix A contains
20
pounds of phosphoric acid,
30
pounds of nitrogen, and
5
pounds of potash. Each cubic yard of mix B contains
10
pounds of phosphoric acid,
30
pounds of nitrogen, and
10
pounds of potash. The minimum monthly requirements are
440
pounds of phosphoric acid,
960
pounds of nitrogen, and
200
pounds of potash. If mix A costs
$30
per cubic yard and mix B costs
$35
per cubic yard, how many cubic yards of each mix should the farmer blend to meet the minimum monthly requirements at a minimum cost? What is this cost?
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