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: 13



Work Step by Step

sales tax = tax rate $\times$ purchase price 98.70=r $\times$1645 divide both sides by 1645 $\frac{98.70}{1645}$=$\frac{r\times 1645}{1645}$ $\frac{98.70}{1645}$=r 0.06=r r=6%
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