Answer
The rate of sales tax is 5%.
Work Step by Step
tax=rate*price
$99=(r)(1980)$
$99\div1980=1980r\div1980$
$0.05=r$
Basic College Mathematics (10th Edition)
by Lial, Margaret L.; Salzman, Stanley A.; Hestwood, Diana L.
Published by
Pearson
ISBN 10:
0134467795
ISBN 13:
978-0-13446-779-5
Chapter 6 - Percent - 6.6 Solving Application Problems with Percent - 6.6 Exercises - Page 440: 31
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