Prealgebra (7th Edition)

Published by Pearson
ISBN 10: 0321955048
ISBN 13: 978-0-32195-504-3

Chapter 7 - Section 7.5 - Percent and Problem Solving: Sales Tax, Commission, and Discount - Exercise Set - Page 512: 19



Work Step by Step

commission = commission rate $\times$ sales 1380.40=r$\times$9860 divide both sides by 9860 $\frac{1380.40}{9860}$ =$\frac{r\times9860}{9860}$ 0.14=r commission rate = 14%
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