#### Answer

The sales tax rate is 5%.

#### Work Step by Step

We are told that the sales tax on a purchase of $\$155.94$ is $\$7.80$. We find the percent tax rate:
$155.95*x=7.80$
$x=7.80/155.95=0.05=5\%$
Thus the sales tax rate is 5%.

Published by
Pearson

ISBN 10:
0321825535

ISBN 13:
978-0-32182-553-7

The sales tax rate is 5%.

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