Answer
The tax rate is 3%.
The total cost is 437.75.
Work Step by Step
$12.75=(r)(425)$
$12.75\div425 = (r)(425)\div425$
$0.03=r$
$cost=425+12.75=437.75$
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 439: 5
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