Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 1 - Section 1.5 - Problem Solving and Using Formulas - Exercise Set - Page 69: 91



Work Step by Step

Let $x$ be the original price for the dress. When the price of the dress gets reduced by a first number 40 % or $\dfrac{40}{100}$ then it can be expressed as $(x-\dfrac{40}{100}x)$ After second reduction , we will come to $x-0.4x-(x-0.4x)0.4=72$ or, $x-0.4x-0.4x+0.16x=72$ or, $0.36 x=72$ or, $x= 200 $ Thus, the original price of the dress was $200
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