Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 4 - Proportions, Percents, and Solving Inequalities - 4.2 - Percents and Problem Solving - Problem Set 4.2 - Page 156: 46


The percent change in her hourly rate is -15%. It is a percent decrease, which means her salary decreased by 15%.

Work Step by Step

Her previous job paid 12.00 dollars per hour. Her new job pays 10.20 dollars per hour. To find the percent change, we use the following formula: percent change = $\frac{New\ amount\ -\ Original\ amount}{Original\ amount}$ $\times$ 100% The original salary was 12.00 dollars per hour. The new salary is 10.20 dollars per hour. Substituting these values into the formula yields percent change = $\frac{10.20\ -\ 12.00}{12.00}$ $\times$ 100% percent change = $\frac{-1.80}{12.00}$ $\times$ 100% percent change = -0.15 $\times$ 100% percent change = -15% Because the percent of change is a negative number, it is a percent decrease.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.