Algebra 1

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

Chapter 11 - Rational Expressions and Functions - 11-5 Solving Rational Equations - Practice and Problem-Solving Exercises - Page 684: 44

Answer

$40$ mi/hour

Work Step by Step

Given: $\dfrac{980}{450+s}=\dfrac{820}{450-s}$ Apply cross multiplication. $820(450+s)=980(450-s)$ $410(450+s)=490(450-s)$ $184500+410s=220500-490s$ $410s+490s=220500-184500$ $ 900s=36000$ Thus, $s=\frac{36000}{80}$ Hence, $s=40$ mi/hour
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.

GradeSaver will pay $15 for your literature essays
GradeSaver will pay $25 for your college application essays
GradeSaver will pay $50 for your graduate school essays – Law, Business, or Medical
GradeSaver will pay $10 for your Community Note contributions
GradeSaver will pay $500 for your Textbook Answer contributions