Basic College Mathematics (9th Edition)

Published by Pearson
ISBN 10: 0321825535
ISBN 13: 978-0-32182-553-7

Chapter 6 - Percent - 6.6 Solving Application Problems with Percent - 6.6 Exercises: 32

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%.
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