Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 2 - Solving Equations - 2-10 Change Expressed as a Percent - Practice and Problem-Solving Exercises - Page 148: 14


There was an increase of about $10\%$.

Work Step by Step

Change in value: $=\text{new amount} - \text{original amount} \\= 215.25-195.50 \\= 19.75$ There was an increase. Percent Change: $ =\dfrac{\text{change in value}}{\text{original amount}} \\=\dfrac{19.75}{195.50} \\\approx 0.10 \\\approx 10\%$ There was an increase of around $10\%$.
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