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: 14



Work Step by Step

sales tax = tax rate $\times$ purchase price 103.50=r $\times$1150 divide both sides by 1150 $\frac{103.50}{1150}$=$\frac{r\times 1150}{1150}$ $\frac{103.50}{1150}$= r 0.09 = r r = 9% The tax rate is 9%.
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