Basic College Mathematics (10th Edition)

Published by Pearson
ISBN 10: 0134467795
ISBN 13: 978-0-13446-779-5

Chapter 6 - Percent - 6.2 Percents and Fractions - 6.2 Exercises - Page 401: 94

Answer

$1680

Work Step by Step

210% of a number is equal to 200% plus 10%. Therefore, a shortcut to finding 210% is to double the number and then add 10% of the number, which is found by moving the decimal one space to the left. 210% of 800=2(800)+80.0=1600+80=1680
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