Answer
6%
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%
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: 13
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