Head First Algebra by Tracey Pilone
Author:Tracey Pilone
Language: eng
Format: epub
Tags: MATHEMATICS / Algebra / General
ISBN: 9780596557935
Publisher: O'Reilly Media
Published: 2009-06-29T00:00:00+00:00
Fifteen Minute Mystery Solved
When shopping leads to relationship ruin - solved!
How did Zach know Kathleen was lying?
To figure out that Kathleen was lying, Zach needed to to figure out how many pairs of shoes and how many dresses she actually bought. Let’s start with figuring up some equations:
Figure out the knowns from the problem:
Dresses:
We’ll call them d, and they’re $16 each.
Shoes:
We’ll call them s, and they’re $8 a pair.
Totals:
$72 spent, and twice as many dresses as pairs of shoes for a total of 6.
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