Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 2 - Solving Equations - 2-10 Change Expressed as a Percent - Practice and Problem-Solving Exercises: 28

Answer

78% increase

Work Step by Step

The new number is higher than the original number, so we use the equation for percent increase. The equation for percent increase is the following: $(\frac{new amount - original amount}{original amount})\times100$ Thus, we plug in the numbers to find: $(\frac{15.99-8.99}{8.99})\times100\approx78$%
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