Concept explainers
What is the cost of one notebook? What is the cost of one package of pencils?
Answer to Problem 35E
1 notebook: $1.32
1 pencil package: $0.92
Explanation of Solution
Given information: Consumerism: Kareem and Erin went shopping for school supplies. Kareem bought 3 notebooks and 2 packages of pencils for $5.80. Erin bought 4 notebooks and 1 package of pencils for $6.20.
Calculation:
Let the cost of a notebook be n and the cost of a package of pencils be p . then solve as a system of linear equations.
Solving both equations for p and setting them equal. This is showing the relationship between money spent and notebooks purchased, so we can solve for n.
Here get the price of the notebooks to be $1.32
Solving for p using the value of n and the first equation above
Thus,
1 notebook: $1.32
1 pencil package: $0.92
Chapter 5 Solutions
Advanced Mathematical Concepts: Precalculus with Applications, Student Edition
Additional Math Textbook Solutions
Single Variable Calculus: Early Transcendentals (2nd Edition) - Standalone book
Calculus: Early Transcendentals (2nd Edition)
Thomas' Calculus: Early Transcendentals (14th Edition)
Calculus and Its Applications (11th Edition)
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