Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 1 - Section 1.14 - Rate, Base, and Part - Exercises - Page 84: 29

Answer

20%

Work Step by Step

$percent\ decrease=\frac{the\ change}{original\ amount}\times100\%$ Plug the given values into the formula and simplify. $decrease=\frac{2400-1920}{2400}\times100\%=\frac{480}{2400}\times100\%=0.2\times100\%=20\%$
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.