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: 10


There was an increase of about $27\%$.

Work Step by Step

Change in value: $=\text{new amount} - \text{original amount} \\= 9.5-7.5 \\= 2$ There was an increase. Percent Change: $ =\dfrac{\text{change in value}}{\text{original amount}} \\=\dfrac{2}{7.5} \\\approx 0.27 \\\approx 27\%$ There was an increase of around $27\%$.
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