Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 10 - 10.3 - The Inverse of a Square Matrix - 10.3 Exercises - Page 736: 65a


$R+L+I=120$ and $ 2.5 R+4L+2I=300$ and $R=2(L+I)$

Work Step by Step

We are given that there are $120$ flowers. Let us suppose that $R$ is the number of roses, $L$ is the number of lilies and $I$ is the number of Irises. Therefore, $R+L+I=120$ Further, the total price of the flowers is $ \$ 300$. Thus, $ 2.5 R+4L+2I=300$ Next, $R=2(L+I)$
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.