Concept explainers
To find: an equation relating the sale price to the regular price and the cost on a pair of $29 jeans on sale.
Answer to Problem 10PPS
The cost of a pair of $29 jeans is $7.25.
Explanation of Solution
Given information:
A store is having a sale where all jeans are
Concept used:
Two quantities are proportional if they have a constant ratio or rate.
Proportional relationships can also be described using equations of the form
Calculation:
A store is giving
Assume that
Find the constant of proportionality.
That is, the selling price of the jeans is about 0.25 times the regular price.
Therefore, the corresponding mathematical equation is,
The following diagram describes this situation:
The cost of a pair of $29 jeans is,
Hence, the cost of a pair of $29 jeans is $7.25.
Chapter 6 Solutions
Pre-Algebra, Student Edition
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