Answer
14%
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%
Prealgebra (7th Edition)
by Martin-Gay, Elayn
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
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