#### 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%

Published by
Pearson

ISBN 10:
0321955048

ISBN 13:
978-0-32195-504-3

6%

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